tree 61974ee8b7c5b0428401e29836ce2cc1bbc9484e
parent d851c12b60471188e15e5c8405b289073e8dd025
author Steffen Klassert <steffen.klassert@secunet.com> 1349650098 +0000
committer David S. Miller <davem@davemloft.net> 1349721995 -0400

ipv4: Don't create nh exeption when the device mtu is smaller than the reported pmtu

When a local tool like tracepath tries to send packets bigger than
the device mtu, we create a nh exeption and set the pmtu to device
mtu. The device mtu does not expire, so check if the device mtu is
smaller than the reported pmtu and don't crerate a nh exeption in
that case.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>