Notify userland when a new ND is reachable.

The same notification is already present in ARP.

From Jan Klemkow, ok bluhm@

diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index b44bc83..fa8d3ed 100644 (file)
--- a/sys/netinet6/nd6_nbr.c
+++ b/sys/netinet6/nd6_nbr.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: nd6_nbr.c,v 1.116 2017/05/16 12:24:04 mpi Exp $       */
+/*     $OpenBSD: nd6_nbr.c,v 1.117 2017/06/08 13:28:03 mpi Exp $       */
 /*     $KAME: nd6_nbr.c,v 1.61 2001/02/10 16:06:14 jinmei Exp $        */
 
 /*
@@ -715,6 +715,10 @@ nd6_na_input(struct mbuf *m, int off, int icmp6len)
                if (is_solicited) {
                        ln->ln_state = ND6_LLINFO_REACHABLE;
                        ln->ln_byhint = 0;
+                       /* Notify userland that a new ND entry is reachable. */
+                       KERNEL_LOCK();
+                       rtm_send(rt, RTM_RESOLVE, ifp->if_rdomain);
+                       KERNEL_UNLOCK();
                        if (!ND6_LLINFO_PERMANENT(ln)) {
                                nd6_llinfo_settimer(ln,
                                    ND_IFINFO(ifp)->reachable);