Hi Sven-Haegar,
On Fri, 25 Nov 2016 05:06:53 +0100 (CET) Sven-Haegar Koch <hae...@sdinet.de>
wrote:
>
> Somehow this problem description really reminds me of a report on
> netdev a bit ago, which the following patch fixed:
>
> commit 9ee6c5dc816aa8256257f2cd4008a9291ec7e985
> Author: Lance Richardson <lrich...@redhat.com>
> Date: Wed Nov 2 16:36:17 2016 -0400
>
> ipv4: allow local fragmentation in ip_finish_output_gso()
>
> Some configurations (e.g. geneve interface with default
> MTU of 1500 over an ethernet interface with 1500 MTU) result
> in the transmission of packets that exceed the configured MTU.
> While this should be considered to be a "bad" configuration,
> it is still allowed and should not result in the sending
> of packets that exceed the configured MTU.
>
> Could this be related?
>
> I suppose it would be difficult to test this patch on this machine?
The kernel I am running on is based on 4.7.8, so the above patch
doesn't come close to applying. Most fo what it is reverting was
introduced in commit 359ebda25aa0 ("net/ipv4: Introduce IPSKB_FRAG_SEGS
bit to inet_skb_parm.flags") in v4.8-rc1.
--
Cheers,
Stephen Rothwell
