Subject: Re: Linux 3.4.92 breaks forwarding with netfilter enabled

From: Florian Westphal <[email-masked]>
Date: Wed, 11 Jun 2014 10:10:53 +0200

Jiri Slaby <[email-masked]> wrote:
> > Gergely, please either revert
> > 
> > commit bd91cb56f951a7b0da8c3098ea9cd56854ece66c
> > Author: Florian Westphal <[email-masked]>
> > net: ipv4: ip_forward: fix inverted local_df test
> > [ Upstream commit ca6c5d4ad216d5942ae544bbf02503041bd802aa ]
> > 
> > Or, alternatively, also apply upstream commit 895162b1101b3ea5db08ca6822ae9672717efec0
> > Author: Florian Westphal <[email-masked]>
> > Date:   Fri May 2 15:32:16 2014 +0200
> > netfilter: ipv4: defrag: set local_df flag on defragmented skb
> > 
> > on top of your 3.4.92 kernel.
> > 
> > (The latter might be a better option since it will also fix the
> >  long-standing issue where netfilter sends bogus frag-needed message
> >  under very rare circumstances).
> 
> I believe, the same holds for 3.12, right? (I have just applied "defrag:
> set local_df flag on defragmented skb".)

Yes, its true for all -stable kernels (except new 3.15).

Thanks for taking care of this.