From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Westphal <fw@strlen.de>
Subject: Re: nf_nat_tftp broken in 4.8?
Date: Wed, 9 Nov 2016 22:56:14 +0100
Message-ID: <20161109215614.GA21923@breakpoint.cc>
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Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
        fgao@ikuai8.com, pablo@netfilter.org
To: Florian Fainelli <f.fainelli@gmail.com>
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Florian Fainelli <f.fainelli@gmail.com> wrote:
> After updating my workstation from 4.4 to 4.8, which also serves as a
> NAT gateway for local machines, I noticed that TFTP across this NAT box
> broke:

does 'sysctl net.netfilter.nf_conntrack_helper=1' help?