diff options
| -rw-r--r-- | net/ipv4/route.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 90ba8358a892..741df67a81ec 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -909,6 +909,9 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu) struct dst_entry *dst = &rt->dst; struct fib_result res; + if (dst->dev->mtu < mtu) + return; + if (mtu < ip_rt_min_pmtu) mtu = ip_rt_min_pmtu; |