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From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Mon, 24 Nov 2014 21:51:43 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r274988 - head/sys/netinet6
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Author: ae
Date: Mon Nov 24 21:51:43 2014
New Revision: 274988
URL: https://svnweb.freebsd.org/changeset/base/274988

Log:
  Skip L2 addresses lookups for p2p interfaces.
  
  Discussed with:	melifaro
  Sponsored by:	Yandex LLC

Modified:
  head/sys/netinet6/nd6.c

Modified: head/sys/netinet6/nd6.c
==============================================================================
--- head/sys/netinet6/nd6.c	Mon Nov 24 21:49:40 2014	(r274987)
+++ head/sys/netinet6/nd6.c	Mon Nov 24 21:51:43 2014	(r274988)
@@ -2206,9 +2206,6 @@ nd6_need_cache(struct ifnet *ifp)
 	case IFT_IEEE80211:
 #endif
 	case IFT_INFINIBAND:
-	case IFT_GIF:		/* XXX need more cases? */
-	case IFT_PPP:
-	case IFT_TUNNEL:
 	case IFT_BRIDGE:
 	case IFT_PROPVIRTUAL:
 		return (1);
@@ -2235,6 +2232,8 @@ nd6_add_ifa_lle(struct in6_ifaddr *ia)
 	struct llentry *ln;
 
 	ifp = ia->ia_ifa.ifa_ifp;
+	if (nd6_need_cache(ifp) == 0)
+		return (0);
 	IF_AFDATA_LOCK(ifp);
 	ia->ia_ifa.ifa_rtrequest = nd6_rtrequest;
 	ln = lla_lookup(LLTABLE6(ifp), (LLE_CREATE | LLE_IFADDR |