[PATCH] [IPv4] Reply net unreachable ICMP message
From: Mitsuru Chinen <hidden>
Date: 2007-12-06 06:31:17
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
IPv4 stack doesn't reply any ICMP destination unreachable message with net unreachable code when IP detagrams are being discarded because of no route could be found in the forwarding path. Incidentally, IPv6 stack replies such ICMPv6 message in the similar situation. Signed-off-by: Mitsuru Chinen <redacted> --- net/ipv4/route.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6714bbc..ba85ec9 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c@@ -1375,6 +1375,7 @@ static int ip_error(struct sk_buff *skb) break; case ENETUNREACH: code = ICMP_NET_UNREACH; + IP_INC_STATS_BH(IPSTATS_MIB_INNOROUTES); break; case EACCES: code = ICMP_PKT_FILTERED;
@@ -2004,6 +2005,7 @@ no_route: RT_CACHE_STAT_INC(in_no_route); spec_dst = inet_select_addr(dev, 0, RT_SCOPE_UNIVERSE); res.type = RTN_UNREACHABLE; + err = -ENETUNREACH; goto local_input; /*
--
1.5.3.4