netdev - Re: Linux kernel error stack

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Message-ID: <20180806001912.474wc334aymu4bmd@breakpoint.cc>
Date:   Mon, 6 Aug 2018 02:19:12 +0200
From:   Florian Westphal <fw@...len.de>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     Florian Westphal <fw@...len.de>,
        Satish Patel <satish.txt@...il.com>, netdev@...r.kernel.org
Subject: Re: Linux kernel error stack

Michal Kubecek <mkubecek@...e.cz> wrote:
> On Mon, Aug 06, 2018 at 01:15:37AM +0200, Florian Westphal wrote:
> > Michal Kubecek <mkubecek@...e.cz> wrote:
> > > Oops, exactly this issue was already discussed almost a year ago:
> > > 
> > >   http://lkml.kernel.org/r/20170824104824.2C318A0F3A@unicorn.suse.cz
> > > 
> > > But something more urgent came and I forgot to get back to it. :-(
> > 
> > I did not even remeber, thanks for the pointer.
> > So I think best course of action is to update man page to clearly
> > say this only works in postrouting and with udp, and is ONLY
> > intended for working around old dhcp software.
> 
> As GSO for UDP is on its way to mainline, one might get into trouble
> even with UDP if the rule is not specific enough.

Yes, we still need a fix to ignore GSO too.