From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Mon, 6 Nov 2006 17:45:45 +0000 (-0800)
Subject: [IPV6] ROUTE: Do not enable router reachability probing in router mode.
X-Git-Tag: v2.6.19~56^2~14
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea659e0775281e1c02556e939bf749bb4f55e50c;p=linux-2.6

[IPV6] ROUTE: Do not enable router reachability probing in router mode.

RFC4191 explicitly states that the procedures are applicable to
hosts only.  We should not have changed behavior of routers.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
---

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a972a6641e..b39ae99122 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -380,10 +380,11 @@ static struct rt6_info *rt6_select(struct rt6_info **head, int oif,
 			continue;
 
 		if (m > mpri) {
-			rt6_probe(match);
+			if (strict & RT6_LOOKUP_F_REACHABLE)
+				rt6_probe(match);
 			match = rt;
 			mpri = m;
-		} else {
+		} else if (strict & RT6_LOOKUP_F_REACHABLE) {
 			rt6_probe(rt);
 		}
 	}
@@ -636,7 +637,7 @@ static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
 	int strict = 0;
 	int attempts = 3;
 	int err;
-	int reachable = RT6_LOOKUP_F_REACHABLE;
+	int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
 
 	strict |= flags & RT6_LOOKUP_F_IFACE;
 
@@ -733,7 +734,7 @@ static struct rt6_info *ip6_pol_route_output(struct fib6_table *table,
 	int strict = 0;
 	int attempts = 3;
 	int err;
-	int reachable = RT6_LOOKUP_F_REACHABLE;
+	int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
 
 	strict |= flags & RT6_LOOKUP_F_IFACE;