From: bluhm <bluhm@openbsd.org>
Date: Mon, 13 Jan 2014 23:03:52 +0000 (+0000)
Subject: Call all local valiables of type struct in6_ifaddr "ia6".  This is
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b9e83c60a4e56c6dd88dea22c5646807d7f38c48;p=openbsd

Call all local valiables of type struct in6_ifaddr "ia6".  This is
consistent with struct ifaddr "ifa" and struct in_ifaddr "ia".
OK mpi@
---

diff --git a/sys/net/if_spppsubr.c b/sys/net/if_spppsubr.c
index fed5ff3a79e..98f7688effc 100644
--- a/sys/net/if_spppsubr.c
+++ b/sys/net/if_spppsubr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_spppsubr.c,v 1.116 2014/01/12 15:38:06 stsp Exp $	*/
+/*	$OpenBSD: if_spppsubr.c,v 1.117 2014/01/13 23:03:52 bluhm Exp $	*/
 /*
  * Synchronous PPP/Cisco link level subroutines.
  * Keepalive protocol implemented in both Cisco and PPP modes.
@@ -4727,7 +4727,7 @@ sppp_get_ip6_addrs(struct sppp *sp, struct in6_addr *src, struct in6_addr *dst,
 		   struct in6_addr *srcmask)
 {
 	struct ifnet *ifp = &sp->pp_if;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct in6_addr ssrc, ddst;
 
 	bzero(&ssrc, sizeof(ssrc));
@@ -4736,18 +4736,18 @@ sppp_get_ip6_addrs(struct sppp *sp, struct in6_addr *src, struct in6_addr *dst,
 	 * Pick the first link-local AF_INET6 address from the list,
 	 * aliases don't make any sense on a p2p link anyway.
 	 */
-	ia = in6ifa_ifpforlinklocal(ifp, 0);
-	if (ia) {
-		if (!IN6_IS_ADDR_UNSPECIFIED(&ia->ia_addr.sin6_addr)) {
-			bcopy(&ia->ia_addr.sin6_addr, &ssrc, sizeof(ssrc));
+	ia6 = in6ifa_ifpforlinklocal(ifp, 0);
+	if (ia6) {
+		if (!IN6_IS_ADDR_UNSPECIFIED(&ia6->ia_addr.sin6_addr)) {
+			bcopy(&ia6->ia_addr.sin6_addr, &ssrc, sizeof(ssrc));
 			if (srcmask) {
-				bcopy(&ia->ia_prefixmask.sin6_addr, srcmask,
+				bcopy(&ia6->ia_prefixmask.sin6_addr, srcmask,
 				    sizeof(*srcmask));
 			}
 		}
 
-		if (!IN6_IS_ADDR_UNSPECIFIED(&ia->ia_dstaddr.sin6_addr))
-			bcopy(&ia->ia_dstaddr.sin6_addr, &ddst, sizeof(ddst));
+		if (!IN6_IS_ADDR_UNSPECIFIED(&ia6->ia_dstaddr.sin6_addr))
+			bcopy(&ia6->ia_dstaddr.sin6_addr, &ddst, sizeof(ddst));
 	}
 
 	if (dst)
@@ -4764,13 +4764,13 @@ sppp_update_ip6_addr(void *arg1, void *arg2)
 	struct ifnet *ifp = &sp->pp_if;
 	struct in6_aliasreq *ifra = arg2;
 	struct in6_addr mask = in6mask128;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	int s, error;
 
 	s = splnet();
 
-	ia = in6ifa_ifpforlinklocal(ifp, 0);
-	if (ia == NULL) {
+	ia6 = in6ifa_ifpforlinklocal(ifp, 0);
+	if (ia6 == NULL) {
 		/* IPv6 disabled? */
 		splx(s);
 		return;
@@ -4796,14 +4796,14 @@ sppp_update_ip6_addr(void *arg1, void *arg2)
 	 */
 
 	/* Destination address can only be set for /128. */
-	if (!in6_are_prefix_equal(&ia->ia_prefixmask.sin6_addr, &mask, 128)) {
+	if (!in6_are_prefix_equal(&ia6->ia_prefixmask.sin6_addr, &mask, 128)) {
 		ifra->ifra_dstaddr.sin6_len = 0;
 		ifra->ifra_dstaddr.sin6_family = AF_UNSPEC;
 	}
 
-	ifra->ifra_lifetime = ia->ia6_lifetime;
+	ifra->ifra_lifetime = ia6->ia6_lifetime;
 
-	error = in6_update_ifa(ifp, ifra, ia);
+	error = in6_update_ifa(ifp, ifra, ia6);
 	if (error) {
 		log(LOG_ERR, SPP_FMT
 		    "could not update IPv6 address (error %d)\n",
diff --git a/sys/netinet/ip_carp.c b/sys/netinet/ip_carp.c
index 20cab9b69c0..179b60b26c9 100644
--- a/sys/netinet/ip_carp.c
+++ b/sys/netinet/ip_carp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_carp.c,v 1.218 2014/01/09 06:29:06 tedu Exp $	*/
+/*	$OpenBSD: ip_carp.c,v 1.219 2014/01/13 23:03:52 bluhm Exp $	*/
 
 /*
  * Copyright (c) 2002 Michael Shalayeff. All rights reserved.
@@ -2094,7 +2094,7 @@ int
 carp_set_addr6(struct carp_softc *sc, struct sockaddr_in6 *sin6)
 {
 	struct ifnet *ifp = sc->sc_carpdev;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	int error = 0;
 
 	if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
@@ -2107,31 +2107,31 @@ carp_set_addr6(struct carp_softc *sc, struct sockaddr_in6 *sin6)
 	}
 
 	/* we have to do this by hand to ensure we don't match on ourselves */
-	TAILQ_FOREACH(ia, &in6_ifaddr, ia_list) {
+	TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list) {
 		int i;
 
 		for (i = 0; i < 4; i++) {
 			if ((sin6->sin6_addr.s6_addr32[i] &
-			    ia->ia_prefixmask.sin6_addr.s6_addr32[i]) !=
-			    (ia->ia_addr.sin6_addr.s6_addr32[i] &
-			    ia->ia_prefixmask.sin6_addr.s6_addr32[i]))
+			    ia6->ia_prefixmask.sin6_addr.s6_addr32[i]) !=
+			    (ia6->ia_addr.sin6_addr.s6_addr32[i] &
+			    ia6->ia_prefixmask.sin6_addr.s6_addr32[i]))
 				break;
 		}
 		/* and, yeah, we need a multicast-capable iface too */
-		if (ia->ia_ifp != &sc->sc_if &&
-		    ia->ia_ifp->if_type != IFT_CARP &&
-		    (ia->ia_ifp->if_flags & IFF_MULTICAST) &&
-		    ia->ia_ifp->if_rdomain == sc->sc_if.if_rdomain &&
+		if (ia6->ia_ifp != &sc->sc_if &&
+		    ia6->ia_ifp->if_type != IFT_CARP &&
+		    (ia6->ia_ifp->if_flags & IFF_MULTICAST) &&
+		    ia6->ia_ifp->if_rdomain == sc->sc_if.if_rdomain &&
 		    (i == 4))
 			break;
 	}
 
-	if (ia) {
+	if (ia6) {
 		if (sc->sc_carpdev) {
-			if (sc->sc_carpdev != ia->ia_ifp)
+			if (sc->sc_carpdev != ia6->ia_ifp)
 				return (EADDRNOTAVAIL);
 		} else {
-			ifp = ia->ia_ifp;
+			ifp = ia6->ia_ifp;
 		}
 	}
 
diff --git a/sys/netinet6/icmp6.c b/sys/netinet6/icmp6.c
index 0160e2ff484..325a211019a 100644
--- a/sys/netinet6/icmp6.c
+++ b/sys/netinet6/icmp6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: icmp6.c,v 1.138 2014/01/07 17:07:46 mikeb Exp $	*/
+/*	$OpenBSD: icmp6.c,v 1.139 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: icmp6.c,v 1.217 2001/06/20 15:03:29 jinmei Exp $	*/
 
 /*
@@ -1629,7 +1629,7 @@ ni6_addrs(struct icmp6_nodeinfo *ni6, struct mbuf *m, struct ifnet **ifpp,
     char *subj)
 {
 	struct ifnet *ifp;
-	struct in6_ifaddr *ifa6;
+	struct in6_ifaddr *ia6;
 	struct ifaddr *ifa;
 	struct sockaddr_in6 *subj_ip6 = NULL; /* XXX pedant */
 	int addrs = 0, addrsofif, iffound = 0;
@@ -1656,11 +1656,11 @@ ni6_addrs(struct icmp6_nodeinfo *ni6, struct mbuf *m, struct ifnet **ifpp,
 		TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
 			if (ifa->ifa_addr->sa_family != AF_INET6)
 				continue;
-			ifa6 = ifatoia6(ifa);
+			ia6 = ifatoia6(ifa);
 
 			if ((niflags & NI_NODEADDR_FLAG_ALL) == 0 &&
 			    IN6_ARE_ADDR_EQUAL(&subj_ip6->sin6_addr,
-					       &ifa6->ia_addr.sin6_addr))
+					       &ia6->ia_addr.sin6_addr))
 				iffound = 1;
 
 			/*
@@ -1674,7 +1674,7 @@ ni6_addrs(struct icmp6_nodeinfo *ni6, struct mbuf *m, struct ifnet **ifpp,
 			 */
 
 			/* What do we have to do about ::1? */
-			switch (in6_addrscope(&ifa6->ia_addr.sin6_addr)) {
+			switch (in6_addrscope(&ia6->ia_addr.sin6_addr)) {
 			case __IPV6_ADDR_SCOPE_LINKLOCAL:
 				if ((niflags & NI_NODEADDR_FLAG_LINKLOCAL) == 0)
 					continue;
@@ -1695,7 +1695,7 @@ ni6_addrs(struct icmp6_nodeinfo *ni6, struct mbuf *m, struct ifnet **ifpp,
 			 * check if anycast is okay.
 			 * XXX: just experimental.  not in the spec.
 			 */
-			if ((ifa6->ia6_flags & IN6_IFF_ANYCAST) != 0 &&
+			if ((ia6->ia6_flags & IN6_IFF_ANYCAST) != 0 &&
 			    (niflags & NI_NODEADDR_FLAG_ANYCAST) == 0)
 				continue; /* we need only unicast addresses */
 
@@ -1717,7 +1717,7 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
     struct ifnet *ifp0, int resid)
 {
 	struct ifnet *ifp = ifp0 ? ifp0 : TAILQ_FIRST(&ifnet);
-	struct in6_ifaddr *ifa6;
+	struct in6_ifaddr *ia6;
 	struct ifaddr *ifa;
 	struct ifnet *ifp_dep = NULL;
 	int copied = 0, allow_deprecated = 0;
@@ -1734,9 +1734,9 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
 		TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
 			if (ifa->ifa_addr->sa_family != AF_INET6)
 				continue;
-			ifa6 = ifatoia6(ifa);
+			ia6 = ifatoia6(ifa);
 
-			if ((ifa6->ia6_flags & IN6_IFF_DEPRECATED) != 0 &&
+			if ((ia6->ia6_flags & IN6_IFF_DEPRECATED) != 0 &&
 			    allow_deprecated == 0) {
 				/*
 				 * preferred address should be put before
@@ -1749,12 +1749,12 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
 
 				continue;
 			}
-			else if ((ifa6->ia6_flags & IN6_IFF_DEPRECATED) == 0 &&
+			else if ((ia6->ia6_flags & IN6_IFF_DEPRECATED) == 0 &&
 				 allow_deprecated != 0)
 				continue; /* we now collect deprecated addrs */
 
 			/* What do we have to do about ::1? */
-			switch (in6_addrscope(&ifa6->ia_addr.sin6_addr)) {
+			switch (in6_addrscope(&ia6->ia_addr.sin6_addr)) {
 			case __IPV6_ADDR_SCOPE_LINKLOCAL:
 				if ((niflags & NI_NODEADDR_FLAG_LINKLOCAL) == 0)
 					continue;
@@ -1775,7 +1775,7 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
 			 * check if anycast is okay.
 			 * XXX: just experimental.  not in the spec.
 			 */
-			if ((ifa6->ia6_flags & IN6_IFF_ANYCAST) != 0 &&
+			if ((ia6->ia6_flags & IN6_IFF_ANYCAST) != 0 &&
 			    (niflags & NI_NODEADDR_FLAG_ANYCAST) == 0)
 				continue;
 
@@ -1808,10 +1808,10 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
 			 *
 			 * TTL must be 2^31 > TTL >= 0.
 			 */
-			if (ifa6->ia6_lifetime.ia6t_expire == 0)
+			if (ia6->ia6_lifetime.ia6t_expire == 0)
 				ltime = ND6_INFINITE_LIFETIME;
 			else {
-				time_t diff = ifa6->ia6_lifetime.ia6t_expire -
+				time_t diff = ia6->ia6_lifetime.ia6t_expire -
 				    time_second;
 
 				if (diff <= 0)
@@ -1826,10 +1826,10 @@ ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
 			cp += sizeof(u_int32_t);
 
 			/* copy the address itself */
-			bcopy(&ifa6->ia_addr.sin6_addr, cp,
+			bcopy(&ia6->ia_addr.sin6_addr, cp,
 			      sizeof(struct in6_addr));
 			/* XXX: KAME link-local hack; remove ifindex */
-			if (IN6_IS_ADDR_LINKLOCAL(&ifa6->ia_addr.sin6_addr))
+			if (IN6_IS_ADDR_LINKLOCAL(&ia6->ia_addr.sin6_addr))
 				((struct in6_addr *)cp)->s6_addr16[1] = 0;
 			cp += sizeof(struct in6_addr);
 
@@ -1961,7 +1961,7 @@ icmp6_reflect(struct mbuf *m, size_t off)
 {
 	struct ip6_hdr *ip6;
 	struct icmp6_hdr *icmp6;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct in6_addr t, *src = 0;
 	int plen;
 	int type, code;
@@ -2046,13 +2046,13 @@ icmp6_reflect(struct mbuf *m, size_t off)
 	 * (for example) when we encounter an error while forwarding procedure
 	 * destined to a duplicated address of ours.
 	 */
-	TAILQ_FOREACH(ia, &in6_ifaddr, ia_list)
-		if (IN6_ARE_ADDR_EQUAL(&t, &ia->ia_addr.sin6_addr) &&
-		    (ia->ia6_flags & (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY)) == 0) {
+	TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list)
+		if (IN6_ARE_ADDR_EQUAL(&t, &ia6->ia_addr.sin6_addr) &&
+		    (ia6->ia6_flags & (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY)) == 0) {
 			src = &t;
 			break;
 		}
-	if (ia == NULL && IN6_IS_ADDR_LINKLOCAL(&t) && (m->m_flags & M_LOOP)) {
+	if (ia6 == NULL && IN6_IS_ADDR_LINKLOCAL(&t) && (m->m_flags & M_LOOP)) {
 		/*
 		 * This is the case if the dst is our link-local address
 		 * and the sender is also ourselves.
@@ -2438,12 +2438,12 @@ icmp6_redirect_output(struct mbuf *m0, struct rtentry *rt)
 
 	{
 		/* get ip6 linklocal address for ifp(my outgoing interface). */
-		struct in6_ifaddr *ia;
-		if ((ia = in6ifa_ifpforlinklocal(ifp,
+		struct in6_ifaddr *ia6;
+		if ((ia6 = in6ifa_ifpforlinklocal(ifp,
 						 IN6_IFF_NOTREADY|
 						 IN6_IFF_ANYCAST)) == NULL)
 			goto fail;
-		ifp_ll6 = &ia->ia_addr.sin6_addr;
+		ifp_ll6 = &ia6->ia_addr.sin6_addr;
 	}
 
 	/* get ip6 linklocal address for the router. */
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index 80c357124f8..5b9973da5b8 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6.c,v 1.127 2014/01/07 16:34:05 stsp Exp $	*/
+/*	$OpenBSD: in6.c,v 1.128 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: in6.c,v 1.372 2004/06/14 08:14:21 itojun Exp $	*/
 
 /*
@@ -237,7 +237,7 @@ in6_ifaddloop(struct ifaddr *ifa)
 void
 in6_ifremloop(struct ifaddr *ifa)
 {
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct rtentry *rt;
 	int ia_count = 0;
 
@@ -256,8 +256,8 @@ in6_ifremloop(struct ifaddr *ifa)
 	 * (probably p2p) interfaces.
 	 * XXX: we should avoid such a configuration in IPv6...
 	 */
-	TAILQ_FOREACH(ia, &in6_ifaddr, ia_list) {
-		if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ia->ia_addr.sin6_addr)) {
+	TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list) {
+		if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ia6->ia_addr.sin6_addr)) {
 			ia_count++;
 			if (ia_count > 1)
 				break;
@@ -322,7 +322,7 @@ int
 in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 {
 	struct	in6_ifreq *ifr = (struct in6_ifreq *)data;
-	struct	in6_ifaddr *ia = NULL;
+	struct	in6_ifaddr *ia6 = NULL;
 	struct	in6_aliasreq *ifra = (struct in6_aliasreq *)data;
 	struct sockaddr_in6 *sa6;
 	int privileged;
@@ -444,9 +444,9 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 				sa6->sin6_scope_id = 0; /* XXX: good way? */
 			}
 		}
-		ia = in6ifa_ifpwithaddr(ifp, &sa6->sin6_addr);
+		ia6 = in6ifa_ifpwithaddr(ifp, &sa6->sin6_addr);
 	} else
-		ia = NULL;
+		ia6 = NULL;
 
 	switch (cmd) {
 	case SIOCSIFADDR_IN6:
@@ -466,7 +466,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 		 * interface address from the day one, we consider "remove the
 		 * first one" semantics to be not preferable.
 		 */
-		if (ia == NULL)
+		if (ia6 == NULL)
 			return (EADDRNOTAVAIL);
 		/* FALLTHROUGH */
 	case SIOCAIFADDR_IN6:
@@ -490,7 +490,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 	case SIOCGIFDSTADDR_IN6:
 	case SIOCGIFALIFETIME_IN6:
 		/* must think again about its semantics */
-		if (ia == NULL)
+		if (ia6 == NULL)
 			return (EADDRNOTAVAIL);
 		break;
 	case SIOCSIFALIFETIME_IN6:
@@ -499,7 +499,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 
 		if (!privileged)
 			return (EPERM);
-		if (ia == NULL)
+		if (ia6 == NULL)
 			return (EADDRNOTAVAIL);
 		/* sanity for overflow - beware unsigned */
 		lt = &ifr->ifr_ifru.ifru_lifetime;
@@ -518,7 +518,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 	switch (cmd) {
 
 	case SIOCGIFADDR_IN6:
-		ifr->ifr_addr = ia->ia_addr;
+		ifr->ifr_addr = ia6->ia_addr;
 		break;
 
 	case SIOCGIFDSTADDR_IN6:
@@ -528,15 +528,15 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 		 * XXX: should we check if ifa_dstaddr is NULL and return
 		 * an error?
 		 */
-		ifr->ifr_dstaddr = ia->ia_dstaddr;
+		ifr->ifr_dstaddr = ia6->ia_dstaddr;
 		break;
 
 	case SIOCGIFNETMASK_IN6:
-		ifr->ifr_addr = ia->ia_prefixmask;
+		ifr->ifr_addr = ia6->ia_prefixmask;
 		break;
 
 	case SIOCGIFAFLAG_IN6:
-		ifr->ifr_ifru.ifru_flags6 = ia->ia6_flags;
+		ifr->ifr_ifru.ifru_flags6 = ia6->ia6_flags;
 		break;
 
 	case SIOCGIFSTAT_IN6:
@@ -558,8 +558,8 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 		break;
 
 	case SIOCGIFALIFETIME_IN6:
-		ifr->ifr_ifru.ifru_lifetime = ia->ia6_lifetime;
-		if (ia->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
+		ifr->ifr_ifru.ifru_lifetime = ia6->ia6_lifetime;
+		if (ia6->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
 			time_t maxexpire;
 			struct in6_addrlifetime *retlt =
 			    &ifr->ifr_ifru.ifru_lifetime;
@@ -570,14 +570,14 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 			 */
 			maxexpire =
 			    (time_t)~(1ULL << ((sizeof(maxexpire) * 8) - 1));
-			if (ia->ia6_lifetime.ia6t_vltime <
-			    maxexpire - ia->ia6_updatetime) {
-				retlt->ia6t_expire = ia->ia6_updatetime +
-				    ia->ia6_lifetime.ia6t_vltime;
+			if (ia6->ia6_lifetime.ia6t_vltime <
+			    maxexpire - ia6->ia6_updatetime) {
+				retlt->ia6t_expire = ia6->ia6_updatetime +
+				    ia6->ia6_lifetime.ia6t_vltime;
 			} else
 				retlt->ia6t_expire = maxexpire;
 		}
-		if (ia->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
+		if (ia6->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
 			time_t maxexpire;
 			struct in6_addrlifetime *retlt =
 			    &ifr->ifr_ifru.ifru_lifetime;
@@ -588,28 +588,28 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 			 */
 			maxexpire =
 			    (time_t)~(1ULL << ((sizeof(maxexpire) * 8) - 1));
-			if (ia->ia6_lifetime.ia6t_pltime <
-			    maxexpire - ia->ia6_updatetime) {
-				retlt->ia6t_preferred = ia->ia6_updatetime +
-				    ia->ia6_lifetime.ia6t_pltime;
+			if (ia6->ia6_lifetime.ia6t_pltime <
+			    maxexpire - ia6->ia6_updatetime) {
+				retlt->ia6t_preferred = ia6->ia6_updatetime +
+				    ia6->ia6_lifetime.ia6t_pltime;
 			} else
 				retlt->ia6t_preferred = maxexpire;
 		}
 		break;
 
 	case SIOCSIFALIFETIME_IN6:
-		ia->ia6_lifetime = ifr->ifr_ifru.ifru_lifetime;
+		ia6->ia6_lifetime = ifr->ifr_ifru.ifru_lifetime;
 		/* for sanity */
-		if (ia->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
-			ia->ia6_lifetime.ia6t_expire =
-				time_second + ia->ia6_lifetime.ia6t_vltime;
+		if (ia6->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
+			ia6->ia6_lifetime.ia6t_expire =
+				time_second + ia6->ia6_lifetime.ia6t_vltime;
 		} else
-			ia->ia6_lifetime.ia6t_expire = 0;
-		if (ia->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
-			ia->ia6_lifetime.ia6t_preferred =
-				time_second + ia->ia6_lifetime.ia6t_pltime;
+			ia6->ia6_lifetime.ia6t_expire = 0;
+		if (ia6->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
+			ia6->ia6_lifetime.ia6t_preferred =
+				time_second + ia6->ia6_lifetime.ia6t_pltime;
 		} else
-			ia->ia6_lifetime.ia6t_preferred = 0;
+			ia6->ia6_lifetime.ia6t_preferred = 0;
 		break;
 
 	case SIOCAIFADDR_IN6:
@@ -630,11 +630,11 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 		 * and link it to the list.
 		 */
  		s = splsoftnet();
-		error = in6_update_ifa(ifp, ifra, ia);
+		error = in6_update_ifa(ifp, ifra, ia6);
 		splx(s);
 		if (error != 0)
 			return (error);
-		if ((ia = in6ifa_ifpwithaddr(ifp, &ifra->ifra_addr.sin6_addr))
+		if ((ia6 = in6ifa_ifpwithaddr(ifp, &ifra->ifra_addr.sin6_addr))
 		    == NULL) {
 		    	/*
 			 * this can happen when the user specify the 0 valid
@@ -698,8 +698,8 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 		}
 
 		/* relate the address to the prefix */
-		if (ia->ia6_ndpr == NULL) {
-			ia->ia6_ndpr = pr;
+		if (ia6->ia6_ndpr == NULL) {
+			ia6->ia6_ndpr = pr;
 			pr->ndpr_refcnt++;
 		}
 
@@ -714,7 +714,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
 	}
 
 	case SIOCDIFADDR_IN6:
-		in6_purgeaddr(&ia->ia_ifa);
+		in6_purgeaddr(&ia6->ia_ifa);
 		dohooks(ifp->if_addrhooks, 0);
 		break;
 
@@ -734,7 +734,7 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
  */
 int
 in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
-    struct in6_ifaddr *ia)
+    struct in6_ifaddr *ia6)
 {
 	int error = 0, hostIsNew = 0, plen = -1;
 	struct sockaddr_in6 dst6;
@@ -774,7 +774,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	 * We also require the prefix (when specified) mask is valid, and thus
 	 * reject a non-consecutive mask.
 	 */
-	if (ia == NULL && ifra->ifra_prefixmask.sin6_len == 0)
+	if (ia6 == NULL && ifra->ifra_prefixmask.sin6_len == 0)
 		return (EINVAL);
 	if (ifra->ifra_prefixmask.sin6_len != 0) {
 		plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr,
@@ -784,10 +784,10 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 			return (EINVAL);
 	} else {
 		/*
-		 * In this case, ia must not be NULL.  We just use its prefix
+		 * In this case, ia6 must not be NULL.  We just use its prefix
 		 * length.
 		 */
-		plen = in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL);
+		plen = in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL);
 	}
 	/*
 	 * If the destination address on a p2p interface is specified,
@@ -863,7 +863,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 		    inet_ntop(AF_INET6, &ifra->ifra_addr.sin6_addr,
 		        addr, sizeof(addr))));
 
-		if (ia == NULL)
+		if (ia6 == NULL)
 			return (0); /* there's nothing to do */
 	}
 
@@ -871,30 +871,30 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	 * If this is a new address, allocate a new ifaddr and link it
 	 * into chains.
 	 */
-	if (ia == NULL) {
+	if (ia6 == NULL) {
 		hostIsNew = 1;
-		ia = malloc(sizeof(*ia), M_IFADDR, M_WAITOK | M_ZERO);
-		LIST_INIT(&ia->ia6_memberships);
+		ia6 = malloc(sizeof(*ia6), M_IFADDR, M_WAITOK | M_ZERO);
+		LIST_INIT(&ia6->ia6_memberships);
 		/* Initialize the address and masks, and put time stamp */
-		ia->ia_ifa.ifa_addr = sin6tosa(&ia->ia_addr);
-		ia->ia_addr.sin6_family = AF_INET6;
-		ia->ia_addr.sin6_len = sizeof(ia->ia_addr);
-		ia->ia6_createtime = ia->ia6_updatetime = time_second;
+		ia6->ia_ifa.ifa_addr = sin6tosa(&ia6->ia_addr);
+		ia6->ia_addr.sin6_family = AF_INET6;
+		ia6->ia_addr.sin6_len = sizeof(ia6->ia_addr);
+		ia6->ia6_createtime = ia6->ia6_updatetime = time_second;
 		if ((ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) != 0) {
 			/*
 			 * XXX: some functions expect that ifa_dstaddr is not
 			 * NULL for p2p interfaces.
 			 */
-			ia->ia_ifa.ifa_dstaddr = sin6tosa(&ia->ia_dstaddr);
+			ia6->ia_ifa.ifa_dstaddr = sin6tosa(&ia6->ia_dstaddr);
 		} else {
-			ia->ia_ifa.ifa_dstaddr = NULL;
+			ia6->ia_ifa.ifa_dstaddr = NULL;
 		}
-		ia->ia_ifa.ifa_netmask = sin6tosa(&ia->ia_prefixmask);
+		ia6->ia_ifa.ifa_netmask = sin6tosa(&ia6->ia_prefixmask);
 
-		ia->ia_ifp = ifp;
-		TAILQ_INSERT_TAIL(&in6_ifaddr, ia, ia_list);
-		ia->ia_addr = ifra->ifra_addr;
-		ifa_add(ifp, &ia->ia_ifa);
+		ia6->ia_ifp = ifp;
+		TAILQ_INSERT_TAIL(&in6_ifaddr, ia6, ia_list);
+		ia6->ia_addr = ifra->ifra_addr;
+		ifa_add(ifp, &ia6->ia_ifa);
 	}
 
 	/* set prefix mask */
@@ -905,16 +905,16 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 		 * + such an operation should be rare in IPv6, and
 		 * + the operation would confuse prefix management.
 		 */
-		if (ia->ia_prefixmask.sin6_len &&
-		    in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL) != plen) {
+		if (ia6->ia_prefixmask.sin6_len &&
+		    in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL) != plen) {
 			nd6log((LOG_INFO, "in6_update_ifa: the prefix length of an"
 			    " existing (%s) address should not be changed\n",
-			    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 				addr, sizeof(addr))));
 			error = EINVAL;
 			goto unlink;
 		}
-		ia->ia_prefixmask = ifra->ifra_prefixmask;
+		ia6->ia_prefixmask = ifra->ifra_prefixmask;
 	}
 
 	/*
@@ -923,19 +923,19 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	 * p2p or loopback (see the check above.)
 	 */
 	if (dst6.sin6_family == AF_INET6 &&
-	    !IN6_ARE_ADDR_EQUAL(&dst6.sin6_addr, &ia->ia_dstaddr.sin6_addr)) {
+	    !IN6_ARE_ADDR_EQUAL(&dst6.sin6_addr, &ia6->ia_dstaddr.sin6_addr)) {
 		int e;
 
-		if ((ia->ia_flags & IFA_ROUTE) != 0 &&
-		    (e = rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST)) != 0) {
+		if ((ia6->ia_flags & IFA_ROUTE) != 0 &&
+		    (e = rtinit(&(ia6->ia_ifa), (int)RTM_DELETE, RTF_HOST)) != 0) {
 			nd6log((LOG_ERR, "in6_update_ifa: failed to remove "
 			    "a route to the old destination: %s\n",
-			    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 				addr, sizeof(addr))));
 			/* proceed anyway... */
 		} else
-			ia->ia_flags &= ~IFA_ROUTE;
-		ia->ia_dstaddr = dst6;
+			ia6->ia_flags &= ~IFA_ROUTE;
+		ia6->ia_dstaddr = dst6;
 	}
 
 	/*
@@ -943,43 +943,43 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	 * to see if the address is deprecated or invalidated, but initialize
 	 * these members for applications.
 	 */
-	ia->ia6_lifetime = ifra->ifra_lifetime;
-	if (ia->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
-		ia->ia6_lifetime.ia6t_expire =
-		    time_second + ia->ia6_lifetime.ia6t_vltime;
+	ia6->ia6_lifetime = ifra->ifra_lifetime;
+	if (ia6->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME) {
+		ia6->ia6_lifetime.ia6t_expire =
+		    time_second + ia6->ia6_lifetime.ia6t_vltime;
 	} else
-		ia->ia6_lifetime.ia6t_expire = 0;
-	if (ia->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
-		ia->ia6_lifetime.ia6t_preferred =
-		    time_second + ia->ia6_lifetime.ia6t_pltime;
+		ia6->ia6_lifetime.ia6t_expire = 0;
+	if (ia6->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME) {
+		ia6->ia6_lifetime.ia6t_preferred =
+		    time_second + ia6->ia6_lifetime.ia6t_pltime;
 	} else
-		ia->ia6_lifetime.ia6t_preferred = 0;
+		ia6->ia6_lifetime.ia6t_preferred = 0;
 
 	/* reset the interface and routing table appropriately. */
-	if ((error = in6_ifinit(ifp, ia, hostIsNew)) != 0)
+	if ((error = in6_ifinit(ifp, ia6, hostIsNew)) != 0)
 		goto unlink;
 
 	/*
 	 * configure address flags.
 	 */
-	ia->ia6_flags = ifra->ifra_flags;
+	ia6->ia6_flags = ifra->ifra_flags;
 	/*
 	 * backward compatibility - if IN6_IFF_DEPRECATED is set from the
 	 * userland, make it deprecated.
 	 */
 	if ((ifra->ifra_flags & IN6_IFF_DEPRECATED) != 0) {
-		ia->ia6_lifetime.ia6t_pltime = 0;
-		ia->ia6_lifetime.ia6t_preferred = time_second;
+		ia6->ia6_lifetime.ia6t_pltime = 0;
+		ia6->ia6_lifetime.ia6t_preferred = time_second;
 	}
 	/*
 	 * Make the address tentative before joining multicast addresses,
 	 * so that corresponding MLD responses would not have a tentative
 	 * source address.
 	 */
-	ia->ia6_flags &= ~IN6_IFF_DUPLICATED;	/* safety */
+	ia6->ia6_flags &= ~IN6_IFF_DUPLICATED;	/* safety */
 	if (hostIsNew && in6if_do_dad(ifp) &&
 	    (ifra->ifra_flags & IN6_IFF_NODAD) == 0)
-		ia->ia6_flags |= IN6_IFF_TENTATIVE;
+		ia6->ia6_flags |= IN6_IFF_TENTATIVE;
 
 	/*
 	 * We are done if we have simply modified an existing address.
@@ -1018,7 +1018,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 			    ifp->if_xname, error));
 			goto cleanup;
 		}
-		LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
+		LIST_INSERT_HEAD(&ia6->ia6_memberships, imm, i6mm_chain);
 
 		bzero(&mltmask, sizeof(mltmask));
 		mltmask.sin6_len = sizeof(struct sockaddr_in6);
@@ -1058,9 +1058,9 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 
 			bzero(&info, sizeof(info));
 			info.rti_info[RTAX_DST] = sin6tosa(&mltaddr);
-			info.rti_info[RTAX_GATEWAY] = sin6tosa(&ia->ia_addr);
+			info.rti_info[RTAX_GATEWAY] = sin6tosa(&ia6->ia_addr);
 			info.rti_info[RTAX_NETMASK] = sin6tosa(&mltmask);
-			info.rti_info[RTAX_IFA] = sin6tosa(&ia->ia_addr);
+			info.rti_info[RTAX_IFA] = sin6tosa(&ia6->ia_addr);
 			/* XXX: we need RTF_CLONING to fake nd6_rtrequest */
 			info.rti_flags = RTF_UP | RTF_CLONING;
 			error = rtrequest1(RTM_ADD, &info, RTP_CONNECTED, NULL,
@@ -1080,7 +1080,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 			    ifp->if_xname, error));
 			goto cleanup;
 		}
-		LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
+		LIST_INSERT_HEAD(&ia6->ia6_memberships, imm, i6mm_chain);
 
 		/*
 		 * join node information group address
@@ -1095,7 +1095,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 				    ifp->if_xname, error));
 				/* XXX not very fatal, go on... */
 			} else {
-				LIST_INSERT_HEAD(&ia->ia6_memberships,
+				LIST_INSERT_HEAD(&ia6->ia6_memberships,
 				    imm, i6mm_chain);
 			}
 		}
@@ -1127,9 +1127,9 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 
 			bzero(&info, sizeof(info));
 			info.rti_info[RTAX_DST] = sin6tosa(&mltaddr);
-			info.rti_info[RTAX_GATEWAY] = sin6tosa(&ia->ia_addr);
+			info.rti_info[RTAX_GATEWAY] = sin6tosa(&ia6->ia_addr);
 			info.rti_info[RTAX_NETMASK] = sin6tosa(&mltmask);
-			info.rti_info[RTAX_IFA] = sin6tosa(&ia->ia_addr);
+			info.rti_info[RTAX_IFA] = sin6tosa(&ia6->ia_addr);
 			info.rti_flags = RTF_UP | RTF_CLONING;
 			error = rtrequest1(RTM_ADD, &info, RTP_CONNECTED,
 			    NULL, ifp->if_rdomain);
@@ -1147,7 +1147,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 			    ifp->if_xname, error));
 			goto cleanup;
 		}
-		LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
+		LIST_INSERT_HEAD(&ia6->ia6_memberships, imm, i6mm_chain);
 	}
 
 	/*
@@ -1158,7 +1158,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	if (hostIsNew && in6if_do_dad(ifp) &&
 	    (ifra->ifra_flags & IN6_IFF_NODAD) == 0)
 	{
-		nd6_dad_start(&ia->ia_ifa, NULL);
+		nd6_dad_start(&ia6->ia_ifa, NULL);
 	}
 
 	return (error);
@@ -1169,11 +1169,11 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
 	 * anyway.
 	 */
 	if (hostIsNew)
-		in6_unlink_ifa(ia, ifp);
+		in6_unlink_ifa(ia6, ifp);
 	return (error);
 
   cleanup:
-	in6_purgeaddr(&ia->ia_ifa);
+	in6_purgeaddr(&ia6->ia_ifa);
 	return error;
 }
 
@@ -1181,7 +1181,7 @@ void
 in6_purgeaddr(struct ifaddr *ifa)
 {
 	struct ifnet *ifp = ifa->ifa_ifp;
-	struct in6_ifaddr *ia = ifatoia6(ifa);
+	struct in6_ifaddr *ia6 = ifatoia6(ifa);
 	struct in6_multi_mship *imm;
 
 	/* stop DAD processing */
@@ -1191,70 +1191,70 @@ in6_purgeaddr(struct ifaddr *ifa)
 	 * delete route to the destination of the address being purged.
 	 * The interface must be p2p or loopback in this case.
 	 */
-	if ((ia->ia_flags & IFA_ROUTE) != 0 && ia->ia_dstaddr.sin6_len != 0) {
+	if ((ia6->ia_flags & IFA_ROUTE) != 0 && ia6->ia_dstaddr.sin6_len != 0) {
 		int e;
 
-		if ((e = rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST))
+		if ((e = rtinit(&(ia6->ia_ifa), (int)RTM_DELETE, RTF_HOST))
 		    != 0) {
 			char addr[INET6_ADDRSTRLEN];
 			log(LOG_ERR, "in6_purgeaddr: failed to remove "
 			    "a route to the p2p destination: %s on %s, "
 			    "errno=%d\n",
-			    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 				addr, sizeof(addr)),
 			    ifp->if_xname, e);
 			/* proceed anyway... */
 		} else
-			ia->ia_flags &= ~IFA_ROUTE;
+			ia6->ia_flags &= ~IFA_ROUTE;
 	}
 
 	/* Remove ownaddr's loopback rtentry, if it exists. */
-	in6_ifremloop(&(ia->ia_ifa));
+	in6_ifremloop(&(ia6->ia_ifa));
 
 	/*
 	 * leave from multicast groups we have joined for the interface
 	 */
-	while (!LIST_EMPTY(&ia->ia6_memberships)) {
-		imm = LIST_FIRST(&ia->ia6_memberships);
+	while (!LIST_EMPTY(&ia6->ia6_memberships)) {
+		imm = LIST_FIRST(&ia6->ia6_memberships);
 		LIST_REMOVE(imm, i6mm_chain);
 		in6_leavegroup(imm);
 	}
 
-	in6_unlink_ifa(ia, ifp);
+	in6_unlink_ifa(ia6, ifp);
 }
 
 void
-in6_unlink_ifa(struct in6_ifaddr *ia, struct ifnet *ifp)
+in6_unlink_ifa(struct in6_ifaddr *ia6, struct ifnet *ifp)
 {
 	int	s = splnet();
 
-	ifa_del(ifp, &ia->ia_ifa);
+	ifa_del(ifp, &ia6->ia_ifa);
 
-	TAILQ_REMOVE(&in6_ifaddr, ia, ia_list);
+	TAILQ_REMOVE(&in6_ifaddr, ia6, ia_list);
 
 	/* Release the reference to the base prefix. */
-	if (ia->ia6_ndpr == NULL) {
+	if (ia6->ia6_ndpr == NULL) {
 		char addr[INET6_ADDRSTRLEN];
 
-		if (!IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia)) &&
-		    !IN6_IS_ADDR_LOOPBACK(IA6_IN6(ia)) &&
-		    !IN6_ARE_ADDR_EQUAL(IA6_MASKIN6(ia), &in6mask128))
+		if (!IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia6)) &&
+		    !IN6_IS_ADDR_LOOPBACK(IA6_IN6(ia6)) &&
+		    !IN6_ARE_ADDR_EQUAL(IA6_MASKIN6(ia6), &in6mask128))
 			log(LOG_NOTICE, "in6_unlink_ifa: interface address "
 			    "%s has no prefix\n",
-			    inet_ntop(AF_INET6, IA6_IN6(ia), addr,
+			    inet_ntop(AF_INET6, IA6_IN6(ia6), addr,
 				sizeof(addr)));
 	} else {
-		ia->ia6_flags &= ~IN6_IFF_AUTOCONF;
-		if (--ia->ia6_ndpr->ndpr_refcnt == 0)
-			prelist_remove(ia->ia6_ndpr);
-		ia->ia6_ndpr = NULL;
+		ia6->ia6_flags &= ~IN6_IFF_AUTOCONF;
+		if (--ia6->ia6_ndpr->ndpr_refcnt == 0)
+			prelist_remove(ia6->ia6_ndpr);
+		ia6->ia6_ndpr = NULL;
 	}
 
 	/*
 	 * release another refcnt for the link from in6_ifaddr.
 	 * Note that we should decrement the refcnt at least once for all *BSD.
 	 */
-	ifafree(&ia->ia_ifa);
+	ifafree(&ia6->ia_ifa);
 
 	splx(s);
 }
@@ -1396,7 +1396,7 @@ in6_lifaddr_ioctl(struct socket *so, u_long cmd, caddr_t data,
 	case SIOCGLIFADDR:
 	case SIOCDLIFADDR:
 	    {
-		struct in6_ifaddr *ia;
+		struct in6_ifaddr *ia6;
 		struct in6_addr mask, candidate, match;
 		struct sockaddr_in6 *sin6;
 		int cmp;
@@ -1448,21 +1448,21 @@ in6_lifaddr_ioctl(struct socket *so, u_long cmd, caddr_t data,
 		}
 		if (!ifa)
 			return EADDRNOTAVAIL;
-		ia = ifatoia6(ifa);
+		ia6 = ifatoia6(ifa);
 
 		if (cmd == SIOCGLIFADDR) {
 			/* fill in the if_laddrreq structure */
-			bcopy(&ia->ia_addr, &iflr->addr, ia->ia_addr.sin6_len);
+			bcopy(&ia6->ia_addr, &iflr->addr, ia6->ia_addr.sin6_len);
 			if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
-				bcopy(&ia->ia_dstaddr, &iflr->dstaddr,
-				    ia->ia_dstaddr.sin6_len);
+				bcopy(&ia6->ia_dstaddr, &iflr->dstaddr,
+				    ia6->ia_dstaddr.sin6_len);
 			} else
 				bzero(&iflr->dstaddr, sizeof(iflr->dstaddr));
 
 			iflr->prefixlen =
-			    in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL);
+			    in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL);
 
-			iflr->flags = ia->ia6_flags;	/*XXX*/
+			iflr->flags = ia6->ia6_flags;	/*XXX*/
 
 			return 0;
 		} else {
@@ -1473,19 +1473,19 @@ in6_lifaddr_ioctl(struct socket *so, u_long cmd, caddr_t data,
 			bcopy(iflr->iflr_name, ifra.ifra_name,
 			    sizeof(ifra.ifra_name));
 
-			bcopy(&ia->ia_addr, &ifra.ifra_addr,
-			    ia->ia_addr.sin6_len);
+			bcopy(&ia6->ia_addr, &ifra.ifra_addr,
+			    ia6->ia_addr.sin6_len);
 			if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
-				bcopy(&ia->ia_dstaddr, &ifra.ifra_dstaddr,
-				    ia->ia_dstaddr.sin6_len);
+				bcopy(&ia6->ia_dstaddr, &ifra.ifra_dstaddr,
+				    ia6->ia_dstaddr.sin6_len);
 			} else {
 				bzero(&ifra.ifra_dstaddr,
 				    sizeof(ifra.ifra_dstaddr));
 			}
-			bcopy(&ia->ia_prefixmask, &ifra.ifra_dstaddr,
-			    ia->ia_prefixmask.sin6_len);
+			bcopy(&ia6->ia_prefixmask, &ifra.ifra_dstaddr,
+			    ia6->ia_prefixmask.sin6_len);
 
-			ifra.ifra_flags = ia->ia6_flags;
+			ifra.ifra_flags = ia6->ia6_flags;
 			return in6_control(so, SIOCDIFADDR_IN6, (caddr_t)&ifra,
 			    ifp);
 		}
@@ -1500,7 +1500,7 @@ in6_lifaddr_ioctl(struct socket *so, u_long cmd, caddr_t data,
  * and routing table entry.
  */
 int
-in6_ifinit(struct ifnet *ifp, struct in6_ifaddr *ia, int newhost)
+in6_ifinit(struct ifnet *ifp, struct in6_ifaddr *ia6, int newhost)
 {
 	int	error = 0, plen, ifacount = 0;
 	int	s = splnet();
@@ -1520,13 +1520,13 @@ in6_ifinit(struct ifnet *ifp, struct in6_ifaddr *ia, int newhost)
 	}
 
 	if ((ifacount <= 1 || ifp->if_type == IFT_CARP) && ifp->if_ioctl &&
-	    (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia))) {
+	    (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia6))) {
 		splx(s);
 		return (error);
 	}
 	splx(s);
 
-	ia->ia_ifa.ifa_metric = ifp->if_metric;
+	ia6->ia_ifa.ifa_metric = ifp->if_metric;
 
 	/* we could do in(6)_socktrim here, but just omit it at this moment. */
 
@@ -1536,19 +1536,19 @@ in6_ifinit(struct ifnet *ifp, struct in6_ifaddr *ia, int newhost)
 	 * interface, install a route to the destination as an interface
 	 * direct route.
 	 */
-	plen = in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL); /* XXX */
-	if (plen == 128 && ia->ia_dstaddr.sin6_family == AF_INET6) {
-		if ((error = rtinit(&(ia->ia_ifa), (int)RTM_ADD,
+	plen = in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL); /* XXX */
+	if (plen == 128 && ia6->ia_dstaddr.sin6_family == AF_INET6) {
+		if ((error = rtinit(&(ia6->ia_ifa), (int)RTM_ADD,
 				    RTF_UP | RTF_HOST)) != 0)
 			return (error);
-		ia->ia_flags |= IFA_ROUTE;
+		ia6->ia_flags |= IFA_ROUTE;
 	}
 
 	/* Add ownaddr as loopback rtentry, if necessary (ex. on p2p link). */
 	if (newhost) {
 		/* set the rtrequest function to create llinfo */
-		ia->ia_ifa.ifa_rtrequest = nd6_rtrequest;
-		in6_ifaddloop(&(ia->ia_ifa));
+		ia6->ia_ifa.ifa_rtrequest = nd6_rtrequest;
+		in6_ifaddloop(&(ia6->ia_ifa));
 	}
 
 	return (error);
@@ -1935,7 +1935,7 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 	int blen = -1;
 	struct ifaddr *ifa;
 	struct ifnet *ifp;
-	struct in6_ifaddr *ifa_best = NULL;
+	struct in6_ifaddr *ia6_best = NULL;
 #if NCARP > 0
 	struct sockaddr_dl *proxydl = NULL;
 #endif
@@ -1989,13 +1989,13 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			       "newaddr=%s, scope=%x, dcmp=%d, bcmp=%d, "
 			       "matchlen=%d, flgs=%x\n",
 			       inet_ntop(AF_INET6, dst, adst, sizeof(adst)),
-			       (ifa_best == NULL) ? "none" :
-			       inet_ntop(AF_INET6, &ifa_best->ia_addr.sin6_addr,
+			       (ia6_best == NULL) ? "none" :
+			       inet_ntop(AF_INET6, &ia6_best->ia_addr.sin6_addr,
 			           bestaddr, sizeof(bestaddr)),
 			       inet_ntop(AF_INET6, IFA_IN6(ifa),
 			           asrc, sizeof(asrc)),
 			       src_scope, dscopecmp,
-			       ifa_best ? IN6_ARE_SCOPE_CMP(src_scope, best_scope) : -1,
+			       ia6_best ? IN6_ARE_SCOPE_CMP(src_scope, best_scope) : -1,
 			       in6_matchlen(IFA_IN6(ifa), dst),
 			       ifatoia6(ifa)->ia6_flags);
 		}
@@ -2019,20 +2019,20 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			 * If this is the first address we find,
 			 * keep it anyway.
 			 */
-			if (ifa_best == NULL)
+			if (ia6_best == NULL)
 				goto replace;
 
 			/*
-			 * ifa_best is never NULL beyond this line except
+			 * ia6_best is never NULL beyond this line except
 			 * within the block labeled "replace".
 			 */
 
 			/*
-			 * If ifa_best has a smaller scope than dst and
+			 * If ia6_best has a smaller scope than dst and
 			 * the current address has a larger one than
-			 * (or equal to) dst, always replace ifa_best.
+			 * (or equal to) dst, always replace ia6_best.
 			 * Also, if the current address has a smaller scope
-			 * than dst, ignore it unless ifa_best also has a
+			 * than dst, ignore it unless ia6_best also has a
 			 * smaller scope.
 			 */
 			if (IN6_ARE_SCOPE_CMP(best_scope, dst_scope) < 0 &&
@@ -2060,7 +2060,7 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 				 * If we have already found a non-deprecated
 				 * candidate, just ignore deprecated addresses.
 				 */
-				if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED)
+				if ((ia6_best->ia6_flags & IN6_IFF_DEPRECATED)
 				    == 0)
 					continue;
 			}
@@ -2070,7 +2070,7 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			 * to a deprecated one regardless of scopes and
 			 * address matching.
 			 */
-			if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED) &&
+			if ((ia6_best->ia6_flags & IN6_IFF_DEPRECATED) &&
 			    (ifatoia6(ifa)->ia6_flags &
 			     IN6_IFF_DEPRECATED) == 0)
 				goto replace;
@@ -2078,9 +2078,9 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			/*
 			 * At this point, we have two cases:
 			 * 1. we are looking at a non-deprecated address,
-			 *    and ifa_best is also non-deprecated.
+			 *    and ia6_best is also non-deprecated.
 			 * 2. we are looking at a deprecated address,
-			 *    and ifa_best is also deprecated.
+			 *    and ia6_best is also deprecated.
 			 * Also, we do not have to consider a case where
 			 * the scope of if_best is larger(smaller) than dst and
 			 * the scope of the current address is smaller(larger)
@@ -2090,8 +2090,8 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			 * - the scope comparison between the address and
 			 *   dst (dscopecmp)
 			 * - the scope comparison between the address and
-			 *   ifa_best (bscopecmp)
-			 * - if the address match dst longer than ifa_best
+			 *   ia6_best (bscopecmp)
+			 * - if the address match dst longer than ia6_best
 			 *   (matchcmp)
 			 * - if the address is on the outgoing I/F (outI/F)
 			 *
@@ -2156,14 +2156,14 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			if (oifp == ifp) {
 				/* Do not replace temporary autoconf addresses
 				 * with non-temporary addresses. */
-				if ((ifa_best->ia6_flags & IN6_IFF_PRIVACY) &&
+				if ((ia6_best->ia6_flags & IN6_IFF_PRIVACY) &&
 			            !(ifatoia6(ifa)->ia6_flags &
 				    IN6_IFF_PRIVACY))
 					continue;
 
 				/* Replace non-temporary autoconf addresses
 				 * with temporary addresses. */
-				if (!(ifa_best->ia6_flags & IN6_IFF_PRIVACY) &&
+				if (!(ia6_best->ia6_flags & IN6_IFF_PRIVACY) &&
 			            (ifatoia6(ifa)->ia6_flags &
 				    IN6_IFF_PRIVACY))
 					goto replace;
@@ -2179,18 +2179,18 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 			continue; /* (b) */
 
 		  replace:
-			ifa_best = ifatoia6(ifa);
+			ia6_best = ifatoia6(ifa);
 			blen = tlen >= 0 ? tlen :
 				in6_matchlen(IFA_IN6(ifa), dst);
-			best_scope = in6_addrscope(&ifa_best->ia_addr.sin6_addr);
+			best_scope = in6_addrscope(&ia6_best->ia_addr.sin6_addr);
 		}
 	}
 
 	/* count statistics for future improvements */
-	if (ifa_best == NULL)
+	if (ia6_best == NULL)
 		ip6stat.ip6s_sources_none++;
 	else {
-		if (oifp == ifa_best->ia_ifp)
+		if (oifp == ia6_best->ia_ifp)
 			ip6stat.ip6s_sources_sameif[best_scope]++;
 		else
 			ip6stat.ip6s_sources_otherif[best_scope]++;
@@ -2200,11 +2200,11 @@ in6_ifawithscope(struct ifnet *oifp, struct in6_addr *dst, u_int rdomain)
 		else
 			ip6stat.ip6s_sources_otherscope[best_scope]++;
 
-		if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED) != 0)
+		if ((ia6_best->ia6_flags & IN6_IFF_DEPRECATED) != 0)
 			ip6stat.ip6s_sources_deprecated[best_scope]++;
 	}
 
-	return (ifa_best);
+	return (ia6_best);
 }
 
 /*
@@ -2214,7 +2214,7 @@ void
 in6_if_up(struct ifnet *ifp)
 {
 	struct ifaddr *ifa;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	int dad_delay;		/* delay ticks before DAD output */
 
 	/*
@@ -2226,8 +2226,8 @@ in6_if_up(struct ifnet *ifp)
 	TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
 		if (ifa->ifa_addr->sa_family != AF_INET6)
 			continue;
-		ia = ifatoia6(ifa);
-		if (ia->ia6_flags & IN6_IFF_TENTATIVE)
+		ia6 = ifatoia6(ifa);
+		if (ia6->ia6_flags & IN6_IFF_TENTATIVE)
 			nd6_dad_start(ifa, &dad_delay);
 	}
 }
diff --git a/sys/netinet6/in6_ifattach.c b/sys/netinet6/in6_ifattach.c
index 26369b05230..567caa0b219 100644
--- a/sys/netinet6/in6_ifattach.c
+++ b/sys/netinet6/in6_ifattach.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6_ifattach.c,v 1.66 2014/01/07 16:34:05 stsp Exp $	*/
+/*	$OpenBSD: in6_ifattach.c,v 1.67 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: in6_ifattach.c,v 1.124 2001/07/18 08:32:51 jinmei Exp $	*/
 
 /*
@@ -315,7 +315,7 @@ success:
 int
 in6_ifattach_linklocal(struct ifnet *ifp, struct in6_addr *ifid)
 {
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct in6_aliasreq ifra;
 	struct nd_prefix pr0;
 	int i, s, error;
@@ -398,17 +398,17 @@ in6_ifattach_linklocal(struct ifnet *ifp, struct in6_addr *ifid)
 	 * XXX: Some P2P interfaces seem not to send packets just after
 	 * becoming up, so we skip p2p interfaces for safety.
 	 */
-	ia = in6ifa_ifpforlinklocal(ifp, 0); /* ia must not be NULL */
+	ia6 = in6ifa_ifpforlinklocal(ifp, 0); /* ia6 must not be NULL */
 #ifdef DIAGNOSTIC
-	if (!ia) {
-		panic("ia == NULL in in6_ifattach_linklocal");
+	if (!ia6) {
+		panic("ia6 == NULL in in6_ifattach_linklocal");
 		/* NOTREACHED */
 	}
 #endif
 	if (in6if_do_dad(ifp) && ((ifp->if_flags & IFF_POINTOPOINT) ||
 	    (ifp->if_type == IFT_CARP)) == 0) {
-		ia->ia6_flags &= ~IN6_IFF_NODAD;
-		ia->ia6_flags |= IN6_IFF_TENTATIVE;
+		ia6->ia6_flags &= ~IN6_IFF_NODAD;
+		ia6->ia6_flags |= IN6_IFF_TENTATIVE;
 	}
 
 	/*
@@ -567,7 +567,7 @@ in6_nigroup(struct ifnet *ifp, const char *name, int namelen,
 void
 in6_ifattach(struct ifnet *ifp)
 {
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct in6_addr in6;
 
 	/* some of the interfaces are inherently not IPv6 capable */
@@ -628,8 +628,8 @@ in6_ifattach(struct ifnet *ifp)
 	 * assign a link-local address, if there's none.
 	 */
 	if (ip6_auto_linklocal) {
-		ia = in6ifa_ifpforlinklocal(ifp, 0);
-		if (ia == NULL) {
+		ia6 = in6ifa_ifpforlinklocal(ifp, 0);
+		if (ia6 == NULL) {
 			if (in6_ifattach_linklocal(ifp, NULL) == 0) {
 				/* linklocal address assigned */
 			} else {
diff --git a/sys/netinet6/ip6_output.c b/sys/netinet6/ip6_output.c
index 5882598f092..b2f11f617fb 100644
--- a/sys/netinet6/ip6_output.c
+++ b/sys/netinet6/ip6_output.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_output.c,v 1.148 2013/10/23 19:57:50 deraadt Exp $	*/
+/*	$OpenBSD: ip6_output.c,v 1.149 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: ip6_output.c,v 1.172 2001/03/25 09:55:56 itojun Exp $	*/
 
 /*
@@ -159,7 +159,7 @@ ip6_output(struct mbuf *m0, struct ip6_pktopts *opt, struct route_in6 *ro,
 	struct rtentry *rt = NULL;
 	struct sockaddr_in6 *dst, dstsock;
 	int error = 0;
-	struct in6_ifaddr *ia = NULL;
+	struct in6_ifaddr *ia6 = NULL;
 	u_long mtu;
 	int alwaysfrag, dontfrag;
 	u_int32_t optlen = 0, plen = 0, unfragpartlen = 0;
@@ -567,7 +567,7 @@ reroute:
 	 * then rt (for unicast) and ifp must be non-NULL valid values.
 	 */
 	if (rt) {
-		ia = ifatoia6(rt->rt_ifa);
+		ia6 = ifatoia6(rt->rt_ifa);
 		rt->rt_use++;
 	}
 
@@ -581,8 +581,8 @@ reroute:
 	 * destination addresses.  We should use ia_ifp to support the
 	 * case of sending packets to an address of our own.
 	 */
-	if (ia != NULL && ia->ia_ifp)
-		origifp = ia->ia_ifp;
+	if (ia6 != NULL && ia6->ia_ifp)
+		origifp = ia6->ia_ifp;
 	else
 		origifp = ifp;
 
diff --git a/sys/netinet6/mld6.c b/sys/netinet6/mld6.c
index 534493806f4..95648c14080 100644
--- a/sys/netinet6/mld6.c
+++ b/sys/netinet6/mld6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mld6.c,v 1.34 2013/11/28 10:16:44 mpi Exp $	*/
+/*	$OpenBSD: mld6.c,v 1.35 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: mld6.c,v 1.26 2001/02/16 14:50:35 itojun Exp $	*/
 
 /*
@@ -373,7 +373,7 @@ mld6_sendpkt(struct in6_multi *in6m, int type, const struct in6_addr *dst)
 	struct mld_hdr *mldh;
 	struct ip6_hdr *ip6;
 	struct ip6_moptions im6o;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct ifnet *ifp = in6m->in6m_ifp;
 	int ignflags;
 
@@ -384,10 +384,10 @@ mld6_sendpkt(struct in6_multi *in6m, int type, const struct in6_addr *dst)
 	 * the case where we first join a link-local address.
 	 */
 	ignflags = (IN6_IFF_NOTREADY|IN6_IFF_ANYCAST) & ~IN6_IFF_TENTATIVE;
-	if ((ia = in6ifa_ifpforlinklocal(ifp, ignflags)) == NULL)
+	if ((ia6 = in6ifa_ifpforlinklocal(ifp, ignflags)) == NULL)
 		return;
-	if ((ia->ia6_flags & IN6_IFF_TENTATIVE))
-		ia = NULL;
+	if ((ia6->ia6_flags & IN6_IFF_TENTATIVE))
+		ia6 = NULL;
 
 	/*
 	 * Allocate mbufs to store ip6 header and MLD header.
@@ -418,7 +418,7 @@ mld6_sendpkt(struct in6_multi *in6m, int type, const struct in6_addr *dst)
 	/* ip6_plen will be set later */
 	ip6->ip6_nxt = IPPROTO_ICMPV6;
 	/* ip6_hlim will be set by im6o.im6o_multicast_hlim */
-	ip6->ip6_src = ia ? ia->ia_addr.sin6_addr : in6addr_any;
+	ip6->ip6_src = ia6 ? ia6->ia_addr.sin6_addr : in6addr_any;
 	ip6->ip6_dst = dst ? *dst : in6m->in6m_addr;
 
 	/* fill in the MLD header */
@@ -464,6 +464,6 @@ mld6_sendpkt(struct in6_multi *in6m, int type, const struct in6_addr *dst)
 		break;
 	}
 
-	ip6_output(mh, &ip6_opts, NULL, ia ? 0 : IPV6_UNSPECSRC, &im6o, NULL,
+	ip6_output(mh, &ip6_opts, NULL, ia6 ? 0 : IPV6_UNSPECSRC, &im6o, NULL,
 	    NULL);
 }
diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
index 03a8bf648ed..8b6d863f9ce 100644
--- a/sys/netinet6/nd6.c
+++ b/sys/netinet6/nd6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nd6.c,v 1.108 2014/01/10 14:29:08 tedu Exp $	*/
+/*	$OpenBSD: nd6.c,v 1.109 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: nd6.c,v 1.280 2002/06/08 19:52:07 itojun Exp $	*/
 
 /*
@@ -1264,18 +1264,18 @@ nd6_ioctl(u_long cmd, caddr_t data, struct ifnet *ifp)
 		s = splsoftnet();
 		/* First purge the addresses referenced by a prefix. */
 		LIST_FOREACH_SAFE(pr, &nd_prefix, ndpr_entry, npr) {
-			struct in6_ifaddr *ia, *ia_next;
+			struct in6_ifaddr *ia6, *ia6_next;
 
 			if (IN6_IS_ADDR_LINKLOCAL(&pr->ndpr_prefix.sin6_addr))
 				continue; /* XXX */
 
 			/* do we really have to remove addresses as well? */
-			TAILQ_FOREACH_SAFE(ia, &in6_ifaddr, ia_list, ia_next) {
-				if ((ia->ia6_flags & IN6_IFF_AUTOCONF) == 0)
+			TAILQ_FOREACH_SAFE(ia6, &in6_ifaddr, ia_list, ia6_next) {
+				if ((ia6->ia6_flags & IN6_IFF_AUTOCONF) == 0)
 					continue;
 
-				if (ia->ia6_ndpr == pr)
-					in6_purgeaddr(&ia->ia_ifa);
+				if (ia6->ia6_ndpr == pr)
+					in6_purgeaddr(&ia6->ia_ifa);
 			}
 		}
 		/*
diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index b45c56b49d0..587a561cc93 100644
--- a/sys/netinet6/nd6_nbr.c
+++ b/sys/netinet6/nd6_nbr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nd6_nbr.c,v 1.73 2014/01/07 17:07:46 mikeb Exp $	*/
+/*	$OpenBSD: nd6_nbr.c,v 1.74 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: nd6_nbr.c,v 1.61 2001/02/10 16:06:14 jinmei Exp $	*/
 
 /*
@@ -1123,7 +1123,7 @@ nd6_dad_stoptimer(struct dadq *dp)
 void
 nd6_dad_start(struct ifaddr *ifa, int *tick)
 {
-	struct in6_ifaddr *ia = ifatoia6(ifa);
+	struct in6_ifaddr *ia6 = ifatoia6(ifa);
 	struct dadq *dp;
 	char addr[INET6_ADDRSTRLEN];
 
@@ -1138,21 +1138,21 @@ nd6_dad_start(struct ifaddr *ifa, int *tick)
 	 * - DAD is disabled (ip6_dad_count == 0)
 	 * - the interface address is anycast
 	 */
-	if (!(ia->ia6_flags & IN6_IFF_TENTATIVE)) {
+	if (!(ia6->ia6_flags & IN6_IFF_TENTATIVE)) {
 		log(LOG_DEBUG,
 			"nd6_dad_start: called with non-tentative address "
 			"%s(%s)\n",
-			inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 			    addr, sizeof(addr)),
 			ifa->ifa_ifp ? ifa->ifa_ifp->if_xname : "???");
 		return;
 	}
-	if (ia->ia6_flags & IN6_IFF_ANYCAST) {
-		ia->ia6_flags &= ~IN6_IFF_TENTATIVE;
+	if (ia6->ia6_flags & IN6_IFF_ANYCAST) {
+		ia6->ia6_flags &= ~IN6_IFF_TENTATIVE;
 		return;
 	}
 	if (!ip6_dad_count) {
-		ia->ia6_flags &= ~IN6_IFF_TENTATIVE;
+		ia6->ia6_flags &= ~IN6_IFF_TENTATIVE;
 		return;
 	}
 	if (!ifa->ifa_ifp)
@@ -1168,7 +1168,7 @@ nd6_dad_start(struct ifaddr *ifa, int *tick)
 	if (dp == NULL) {
 		log(LOG_ERR, "nd6_dad_start: memory allocation failed for "
 			"%s(%s)\n",
-			inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 			    addr, sizeof(addr)),
 			ifa->ifa_ifp ? ifa->ifa_ifp->if_xname : "???");
 		return;
@@ -1178,7 +1178,7 @@ nd6_dad_start(struct ifaddr *ifa, int *tick)
 	ip6_dad_pending++;
 
 	nd6log((LOG_DEBUG, "%s: starting DAD for %s\n", ifa->ifa_ifp->if_xname,
-	    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr, addr, sizeof(addr))));
+	    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr, addr, sizeof(addr))));
 
 	/*
 	 * Send NS packet for DAD, ip6_dad_count times.
@@ -1237,14 +1237,14 @@ void
 nd6_dad_timer(struct ifaddr *ifa)
 {
 	int s;
-	struct in6_ifaddr *ia = ifatoia6(ifa);
+	struct in6_ifaddr *ia6 = ifatoia6(ifa);
 	struct dadq *dp;
 	char addr[INET6_ADDRSTRLEN];
 
 	s = splsoftnet();		/* XXX */
 
 	/* Sanity check */
-	if (ia == NULL) {
+	if (ia6 == NULL) {
 		log(LOG_ERR, "nd6_dad_timer: called with null parameter\n");
 		goto done;
 	}
@@ -1253,18 +1253,18 @@ nd6_dad_timer(struct ifaddr *ifa)
 		log(LOG_ERR, "nd6_dad_timer: DAD structure not found\n");
 		goto done;
 	}
-	if (ia->ia6_flags & IN6_IFF_DUPLICATED) {
+	if (ia6->ia6_flags & IN6_IFF_DUPLICATED) {
 		log(LOG_ERR, "nd6_dad_timer: called with duplicated address "
 			"%s(%s)\n",
-			inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 			    addr, sizeof(addr)),
 			ifa->ifa_ifp ? ifa->ifa_ifp->if_xname : "???");
 		goto done;
 	}
-	if ((ia->ia6_flags & IN6_IFF_TENTATIVE) == 0) {
+	if ((ia6->ia6_flags & IN6_IFF_TENTATIVE) == 0) {
 		log(LOG_ERR, "nd6_dad_timer: called with non-tentative address "
 			"%s(%s)\n",
-			inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 			    addr, sizeof(addr)),
 			ifa->ifa_ifp ? ifa->ifa_ifp->if_xname : "???");
 		goto done;
@@ -1322,12 +1322,12 @@ nd6_dad_timer(struct ifaddr *ifa)
 			 * We are done with DAD.  No NA came, no NS came.
 			 * duplicated address found.
 			 */
-			ia->ia6_flags &= ~IN6_IFF_TENTATIVE;
+			ia6->ia6_flags &= ~IN6_IFF_TENTATIVE;
 
 			nd6log((LOG_DEBUG,
 			    "%s: DAD complete for %s - no duplicates found\n",
 			    ifa->ifa_ifp->if_xname,
-			    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr,
+			    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr,
 				addr, sizeof(addr))));
 
 			TAILQ_REMOVE(&dadq, (struct dadq *)dp, dad_list);
@@ -1345,7 +1345,7 @@ done:
 void
 nd6_dad_duplicated(struct ifaddr *ifa)
 {
-	struct in6_ifaddr *ia = ifatoia6(ifa);
+	struct in6_ifaddr *ia6 = ifatoia6(ifa);
 	struct dadq *dp;
 	char addr[INET6_ADDRSTRLEN];
 
@@ -1358,18 +1358,18 @@ nd6_dad_duplicated(struct ifaddr *ifa)
 	log(LOG_ERR, "%s: DAD detected duplicate IPv6 address %s: "
 	    "NS in/out=%d/%d, NA in=%d\n",
 	    ifa->ifa_ifp->if_xname,
-	    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr, addr, sizeof(addr)),
+	    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr, addr, sizeof(addr)),
 	    dp->dad_ns_icount, dp->dad_ns_ocount, dp->dad_na_icount);
 
-	ia->ia6_flags &= ~IN6_IFF_TENTATIVE;
-	ia->ia6_flags |= IN6_IFF_DUPLICATED;
+	ia6->ia6_flags &= ~IN6_IFF_TENTATIVE;
+	ia6->ia6_flags |= IN6_IFF_DUPLICATED;
 
 	/* We are done with DAD, with duplicated address found. (failure) */
 	nd6_dad_stoptimer(dp);
 
 	log(LOG_ERR, "%s: DAD complete for %s - duplicate found\n",
 	    ifa->ifa_ifp->if_xname,
-	    inet_ntop(AF_INET6, &ia->ia_addr.sin6_addr, addr, sizeof(addr)));
+	    inet_ntop(AF_INET6, &ia6->ia_addr.sin6_addr, addr, sizeof(addr)));
 	log(LOG_ERR, "%s: manual intervention required\n",
 	    ifa->ifa_ifp->if_xname);
 
@@ -1383,7 +1383,7 @@ nd6_dad_duplicated(struct ifaddr *ifa)
 void
 nd6_dad_ns_output(struct dadq *dp, struct ifaddr *ifa)
 {
-	struct in6_ifaddr *ia = ifatoia6(ifa);
+	struct in6_ifaddr *ia6 = ifatoia6(ifa);
 	struct ifnet *ifp = ifa->ifa_ifp;
 
 	dp->dad_ns_tcount++;
@@ -1401,13 +1401,13 @@ nd6_dad_ns_output(struct dadq *dp, struct ifaddr *ifa)
 	}
 
 	dp->dad_ns_ocount++;
-	nd6_ns_output(ifp, NULL, &ia->ia_addr.sin6_addr, NULL, 1);
+	nd6_ns_output(ifp, NULL, &ia6->ia_addr.sin6_addr, NULL, 1);
 }
 
 void
 nd6_dad_ns_input(struct ifaddr *ifa)
 {
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct in6_addr *taddr6;
 	struct dadq *dp;
 	int duplicate;
@@ -1415,8 +1415,8 @@ nd6_dad_ns_input(struct ifaddr *ifa)
 	if (!ifa)
 		panic("ifa == NULL in nd6_dad_ns_input");
 
-	ia = ifatoia6(ifa);
-	taddr6 = &ia->ia_addr.sin6_addr;
+	ia6 = ifatoia6(ifa);
+	taddr6 = &ia6->ia_addr.sin6_addr;
 	duplicate = 0;
 	dp = nd6_dad_find(ifa);
 
diff --git a/sys/netinet6/nd6_rtr.c b/sys/netinet6/nd6_rtr.c
index 5779c4ab37e..280def0d385 100644
--- a/sys/netinet6/nd6_rtr.c
+++ b/sys/netinet6/nd6_rtr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nd6_rtr.c,v 1.76 2014/01/10 14:29:08 tedu Exp $	*/
+/*	$OpenBSD: nd6_rtr.c,v 1.77 2014/01/13 23:03:52 bluhm Exp $	*/
 /*	$KAME: nd6_rtr.c,v 1.97 2001/02/07 11:09:13 itojun Exp $	*/
 
 /*
@@ -905,7 +905,7 @@ void
 purge_detached(struct ifnet *ifp)
 {
 	struct nd_prefix *pr, *pr_next;
-	struct in6_ifaddr *ia;
+	struct in6_ifaddr *ia6;
 	struct ifaddr *ifa, *ifa_next;
 
 	LIST_FOREACH_SAFE(pr, &nd_prefix, ndpr_entry, pr_next) {
@@ -925,9 +925,9 @@ purge_detached(struct ifnet *ifp)
 		TAILQ_FOREACH_SAFE(ifa, &ifp->if_addrlist, ifa_list, ifa_next) {
 			if (ifa->ifa_addr->sa_family != AF_INET6)
 				continue;
-			ia = ifatoia6(ifa);
-			if ((ia->ia6_flags & IN6_IFF_AUTOCONF) ==
-			    IN6_IFF_AUTOCONF && ia->ia6_ndpr == pr) {
+			ia6 = ifatoia6(ifa);
+			if ((ia6->ia6_flags & IN6_IFF_AUTOCONF) ==
+			    IN6_IFF_AUTOCONF && ia6->ia6_ndpr == pr) {
 				in6_purgeaddr(ifa);
 			}
 		}
@@ -1176,33 +1176,33 @@ prelist_update(struct nd_prefix *new, struct nd_defrouter *dr, struct mbuf *m)
 	 * should reject autoconfiguration of a new address.
 	 */
 	TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
-		struct in6_ifaddr *ifa6;
+		struct in6_ifaddr *ia6;
 		int ifa_plen;
 		u_int32_t storedlifetime;
 
 		if (ifa->ifa_addr->sa_family != AF_INET6)
 			continue;
 
-		ifa6 = ifatoia6(ifa);
+		ia6 = ifatoia6(ifa);
 
 		/*
 		 * Spec is not clear here, but I believe we should concentrate
 		 * on unicast (i.e. not anycast) addresses.
 		 * XXX: other ia6_flags? detached or duplicated?
 		 */
-		if ((ifa6->ia6_flags & IN6_IFF_ANYCAST) != 0)
+		if ((ia6->ia6_flags & IN6_IFF_ANYCAST) != 0)
 			continue;
 
-		ifa_plen = in6_mask2len(&ifa6->ia_prefixmask.sin6_addr, NULL);
+		ifa_plen = in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL);
 		if (ifa_plen != new->ndpr_plen ||
-		    !in6_are_prefix_equal(&ifa6->ia_addr.sin6_addr,
+		    !in6_are_prefix_equal(&ia6->ia_addr.sin6_addr,
 		    &new->ndpr_prefix.sin6_addr, ifa_plen))
 			continue;
 
 		if (ia6_match == NULL) /* remember the first one */
-			ia6_match = ifa6;
+			ia6_match = ia6;
 
-		if ((ifa6->ia6_flags & IN6_IFF_AUTOCONF) == 0) {
+		if ((ia6->ia6_flags & IN6_IFF_AUTOCONF) == 0) {
 			statique = 1;
 			continue;
 		}
@@ -1230,25 +1230,25 @@ prelist_update(struct nd_prefix *new, struct nd_defrouter *dr, struct mbuf *m)
 		 * See the discussion in the IETF ipngwg ML in August 2001,
 		 * with the Subject "StoredLifetime in RFC 2462".
 		 */
-		lt6_tmp = ifa6->ia6_lifetime;
+		lt6_tmp = ia6->ia6_lifetime;
 
 		/* RFC 4941 temporary addresses (privacy extension). */
-		if (ifa6->ia6_flags & IN6_IFF_PRIVACY) {
+		if (ia6->ia6_flags & IN6_IFF_PRIVACY) {
 			/* Do we still have a non-deprecated address? */
-			if ((ifa6->ia6_flags & IN6_IFF_DEPRECATED) == 0)
+			if ((ia6->ia6_flags & IN6_IFF_DEPRECATED) == 0)
 				tempaddr_preferred = 1;
 			/* Don't extend lifetime for temporary addresses. */
 			if (new->ndpr_vltime >= lt6_tmp.ia6t_vltime)
 				continue;
 			if (new->ndpr_pltime >= lt6_tmp.ia6t_pltime)
 				continue;
-		} else if ((ifa6->ia6_flags & IN6_IFF_DEPRECATED) == 0)
+		} else if ((ia6->ia6_flags & IN6_IFF_DEPRECATED) == 0)
 			/* We have a regular SLAAC address. */
 			autoconf = 1;
 
 		if (lt6_tmp.ia6t_vltime == ND6_INFINITE_LIFETIME)
 			storedlifetime = ND6_INFINITE_LIFETIME;
-		else if (time_second - ifa6->ia6_updatetime >
+		else if (time_second - ia6->ia6_updatetime >
 			 lt6_tmp.ia6t_vltime) {
 			/*
 			 * The case of "invalid" address.  We should usually
@@ -1257,7 +1257,7 @@ prelist_update(struct nd_prefix *new, struct nd_defrouter *dr, struct mbuf *m)
 			storedlifetime = 0;
 		} else
 			storedlifetime = lt6_tmp.ia6t_vltime -
-				(time_second - ifa6->ia6_updatetime);
+				(time_second - ia6->ia6_updatetime);
 		if (TWOHOUR < new->ndpr_vltime ||
 		    storedlifetime < new->ndpr_vltime) {
 			lt6_tmp.ia6t_vltime = new->ndpr_vltime;
@@ -1287,8 +1287,8 @@ prelist_update(struct nd_prefix *new, struct nd_defrouter *dr, struct mbuf *m)
 
 		in6_init_address_ltimes(pr, &lt6_tmp);
 
-		ifa6->ia6_lifetime = lt6_tmp;
-		ifa6->ia6_updatetime = time_second;
+		ia6->ia6_lifetime = lt6_tmp;
+		ia6->ia6_updatetime = time_second;
 	}
 
 	if ((!autoconf || ((ifp->if_xflags & IFXF_INET6_NOPRIVACY) == 0 &&
@@ -1426,7 +1426,7 @@ void
 pfxlist_onlink_check(void)
 {
 	struct nd_prefix *pr;
-	struct in6_ifaddr *ifa;
+	struct in6_ifaddr *ia6;
 	char addr[INET6_ADDRSTRLEN];
 
 	/*
@@ -1532,11 +1532,11 @@ pfxlist_onlink_check(void)
 	 * always be attached.
 	 * The precise detection logic is same as the one for prefixes.
 	 */
-	TAILQ_FOREACH(ifa, &in6_ifaddr, ia_list) {
-		if (!(ifa->ia6_flags & IN6_IFF_AUTOCONF))
+	TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list) {
+		if (!(ia6->ia6_flags & IN6_IFF_AUTOCONF))
 			continue;
 
-		if (ifa->ia6_ndpr == NULL) {
+		if (ia6->ia6_ndpr == NULL) {
 			/*
 			 * This can happen when we first configure the address
 			 * (i.e. the address exists, but the prefix does not).
@@ -1545,29 +1545,29 @@ pfxlist_onlink_check(void)
 			continue;
 		}
 
-		if (find_pfxlist_reachable_router(ifa->ia6_ndpr))
+		if (find_pfxlist_reachable_router(ia6->ia6_ndpr))
 			break;
 	}
-	if (ifa) {
-		TAILQ_FOREACH(ifa, &in6_ifaddr, ia_list) {
-			if ((ifa->ia6_flags & IN6_IFF_AUTOCONF) == 0)
+	if (ia6) {
+		TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list) {
+			if ((ia6->ia6_flags & IN6_IFF_AUTOCONF) == 0)
 				continue;
 
-			if (ifa->ia6_ndpr == NULL) /* XXX: see above. */
+			if (ia6->ia6_ndpr == NULL) /* XXX: see above. */
 				continue;
 
-			if (find_pfxlist_reachable_router(ifa->ia6_ndpr))
-				ifa->ia6_flags &= ~IN6_IFF_DETACHED;
+			if (find_pfxlist_reachable_router(ia6->ia6_ndpr))
+				ia6->ia6_flags &= ~IN6_IFF_DETACHED;
 			else
-				ifa->ia6_flags |= IN6_IFF_DETACHED;
+				ia6->ia6_flags |= IN6_IFF_DETACHED;
 		}
 	}
 	else {
-		TAILQ_FOREACH(ifa, &in6_ifaddr, ia_list) {
-			if ((ifa->ia6_flags & IN6_IFF_AUTOCONF) == 0)
+		TAILQ_FOREACH(ia6, &in6_ifaddr, ia_list) {
+			if ((ia6->ia6_flags & IN6_IFF_AUTOCONF) == 0)
 				continue;
 
-			ifa->ia6_flags &= ~IN6_IFF_DETACHED;
+			ia6->ia6_flags &= ~IN6_IFF_DETACHED;
 		}
 	}
 }
@@ -1801,7 +1801,7 @@ in6_ifadd(struct nd_prefix *pr, int privacy)
 	struct ifnet *ifp = pr->ndpr_ifp;
 	struct ifaddr *ifa;
 	struct in6_aliasreq ifra;
-	struct in6_ifaddr *ia, *ib;
+	struct in6_ifaddr *ia6;
 	int error, s, plen0;
 	struct in6_addr mask, rand_ifid;
 	int prefixlen = pr->ndpr_plen;
@@ -1830,7 +1830,7 @@ in6_ifadd(struct nd_prefix *pr, int privacy)
 	 */
 	ifa = &in6ifa_ifpforlinklocal(ifp, 0)->ia_ifa; /* 0 is OK? */
 	if (ifa)
-		ib = ifatoia6(ifa);
+		ia6 = ifatoia6(ifa);
 	else
 		return NULL;
 
@@ -1843,7 +1843,7 @@ in6_ifadd(struct nd_prefix *pr, int privacy)
 #endif
 
 	/* prefixlen + ifidlen must be equal to 128 */
-	plen0 = in6_mask2len(&ib->ia_prefixmask.sin6_addr, NULL);
+	plen0 = in6_mask2len(&ia6->ia_prefixmask.sin6_addr, NULL);
 	if (prefixlen != plen0) {
 		nd6log((LOG_INFO, "in6_ifadd: wrong prefixlen for %s "
 		    "(prefix=%d ifid=%d)\n",
@@ -1885,13 +1885,13 @@ in6_ifadd(struct nd_prefix *pr, int privacy)
 		    (rand_ifid.s6_addr32[3] & ~mask.s6_addr32[3]);
 	} else {
 		ifra.ifra_addr.sin6_addr.s6_addr32[0] |=
-		    (ib->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]);
+		    (ia6->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]);
 		ifra.ifra_addr.sin6_addr.s6_addr32[1] |=
-		    (ib->ia_addr.sin6_addr.s6_addr32[1] & ~mask.s6_addr32[1]);
+		    (ia6->ia_addr.sin6_addr.s6_addr32[1] & ~mask.s6_addr32[1]);
 		ifra.ifra_addr.sin6_addr.s6_addr32[2] |=
-		    (ib->ia_addr.sin6_addr.s6_addr32[2] & ~mask.s6_addr32[2]);
+		    (ia6->ia_addr.sin6_addr.s6_addr32[2] & ~mask.s6_addr32[2]);
 		ifra.ifra_addr.sin6_addr.s6_addr32[3] |=
-		    (ib->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]);
+		    (ia6->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]);
 	}
 
 	/* new prefix mask. */
@@ -1936,9 +1936,8 @@ in6_ifadd(struct nd_prefix *pr, int privacy)
 		return (NULL);	/* ifaddr must not have been allocated. */
 	}
 
-	ia = in6ifa_ifpwithaddr(ifp, &ifra.ifra_addr.sin6_addr);
-
-	return (ia);		/* this is always non-NULL */
+	/* this is always non-NULL */
+	return (in6ifa_ifpwithaddr(ifp, &ifra.ifra_addr.sin6_addr));
 }
 
 int