ipv4: Don't increase PMTU with Datagram Too Big message.
authorLi Wei <lw@cn.fujitsu.com>
Thu, 29 Jan 2015 08:09:03 +0000 (16:09 +0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 29 Jan 2015 23:28:59 +0000 (15:28 -0800)
RFC 1191 said, "a host MUST not increase its estimate of the Path
MTU in response to the contents of a Datagram Too Big message."

Signed-off-by: Li Wei <lw@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/route.c

Simple merge