Commit 09757646 authored Jun 11, 2018 by Julian Anastasov Committed by David S. Miller Jun 11, 2018

ipv6: allow PMTU exceptions to local routes



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: 45e4fd26 ("ipv6: Only create RTF_CACHE routes after encountering pmtu exception")
Fixes: 7343ff31 ("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>

parent f0dc7f9c

net/ipv6/route.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -2307,9 +2307,6 @@ static void __ip6_rt_update_pmtu(struct dst_entry dst, const struct sock sk,
		const struct in6_addr daddr, saddr;
		struct rt6_info rt6 = (struct rt6_info )dst;

		if (rt6->rt6i_flags & RTF_LOCAL)
		return;

		if (dst_metric_locked(dst, RTAX_MTU))
		return;

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