From: Haishuang Yan <yanhaishu...@cmss.chinamobile.com> Date: Sat, 21 May 2016 18:17:34 +0800
> When creat an ip6gretap interface with an unreachable route, > the MTU is about 14 bytes larger than what was needed. ... > Because rt is not NULL here, so dev->mtu will subtract the ethernet > header length later. But when rt is NULL, it just simply return, so > dev->mtu doesn't update correctly in this situation. > > This patch first verify the dev->type is ARPHRD_ETHER for ip6gretap > interface, and then decrease the mtu as early as possible. > > Signed-off-by: Haishuang Yan <yanhaishu...@cmss.chinamobile.com> Applied.
