From e08e6fba9c05e79f2cccdb07fea65cb9178a69ab Mon Sep 17 00:00:00 2001
From: Ville Nuorvala <vnuorval@tcs.hut.fi>
Date: Fri, 22 Sep 2006 14:42:46 -0700
Subject: [PATCH] --- yaml --- r: 34738 b: refs/heads/master c:
 5f3e6e9e19f50a6910aec2dbd479187aabba04b7 h: refs/heads/master v: v3

---
 [refs]                 | 2 +-
 trunk/net/ipv6/ndisc.c | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index c64f2bae6c08..6d02688aa92b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 74553b09dcd9194cbda737016f0b89f245145670
+refs/heads/master: 5f3e6e9e19f50a6910aec2dbd479187aabba04b7
diff --git a/trunk/net/ipv6/ndisc.c b/trunk/net/ipv6/ndisc.c
index ed01f9a330d6..0e0d6ce69021 100644
--- a/trunk/net/ipv6/ndisc.c
+++ b/trunk/net/ipv6/ndisc.c
@@ -952,6 +952,15 @@ static void ndisc_recv_na(struct sk_buff *skb)
 		if (neigh->nud_state & NUD_FAILED)
 			goto out;
 
+		/*
+		 * Don't update the neighbor cache entry on a proxy NA from
+		 * ourselves because either the proxied node is off link or it
+		 * has already sent a NA to us.
+		 */
+		if (lladdr && !memcmp(lladdr, dev->dev_addr, dev->addr_len) &&
+		    pneigh_lookup(&nd_tbl, &msg->target, dev, 0))
+			goto out;
+
 		neigh_update(neigh, lladdr,
 			     msg->icmph.icmp6_solicited ? NUD_REACHABLE : NUD_STALE,
 			     NEIGH_UPDATE_F_WEAK_OVERRIDE|