tree 62c9d02997f5bd64d8868dc4c754eef7eaa2a84e
parent 7a67e69a339a6824be2fc483073782ab2f47fcd2
author Stefano Brivio <sbrivio@redhat.com> 1521130633 +0100
committer Steffen Klassert <steffen.klassert@secunet.com> 1521445550 +0100

vti6: Fix dev->max_mtu setting

We shouldn't allow a tunnel to have IP_MAX_MTU as MTU, because
another IPv6 header is going on top of our packets. Without this
patch, we might end up building packets bigger than IP_MAX_MTU.

Fixes: b96f9afee4eb ("ipv4/6: use core net MTU range checking")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>