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ipv6: allow PMTU exceptions to local routes

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[ Upstream commit 0975764684 ]

IPVS setups with local client and remote tunnel server need
to create exception for the local virtual IP. What we do is to
change PMTU from 64KB (on "lo") to 1460 in the common case.

Suggested-by: Martin KaFai Lau <kafai@fb.com>
Fixes: 45e4fd2668 ("ipv6: Only create RTF_CACHE routes after encountering pmtu exception")
Fixes: 7343ff31eb ("ipv6: Don't create clones of host routes.")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julian Anastasov
2018-06-11 02:02:54 +03:00
committed by Greg Kroah-Hartman
parent 780617b249
commit c669191257
1 changed files with 0 additions and 3 deletions
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3
net/ipv6/route.c
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@@ -1373,9 +1373,6 @@ static void __ip6_rt_update_pmtu(struct dst_entry *dst, const struct sock *sk,
{
struct rt6_info *rt6 = (struct rt6_info *)dst;
if (rt6->rt6i_flags & RTF_LOCAL)
return;
if (dst_metric_locked(dst, RTAX_MTU))
return;