From 25273e5587c57afc353970221b1d8f16c674610e Mon Sep 17 00:00:00 2001
From: mpi <mpi@openbsd.org>
Date: Thu, 8 Jun 2017 13:28:03 +0000
Subject: [PATCH] Notify userland when a new ND is reachable.

The same notification is already present in ARP.

From Jan Klemkow, ok bluhm@
---
 sys/netinet6/nd6_nbr.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index b44bc83de5d..fa8d3ed1472 100644
--- 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);
-- 
2.20.1