Re: [PATCH 0/2] net: Set maximum receive packet size on veth interfaces

From: Stephen Hemminger
Date: Tue May 09 2017 - 11:49:39 EST


On Tue, 9 May 2017 14:44:36 +0200
Fredrik Markstrom <fredrik.markstrom@xxxxxxxxx> wrote:

> Currently veth drops all packets larger then the mtu set on the receiving
> end of the pair. This is inconsistent with most hardware ethernet drivers.

There is no guarantee that packets larger than MTU + VLAN tag will be received
by hardware drivers. So why is this necessary for veth? What is your special
use case which makes this necessary?