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Date:   Tue, 5 Jun 2018 17:12:37 +0200
From:   Pablo Neira Ayuso <pablo@netfilter.org>
To:     David Miller <davem@davemloft.net>
Cc:     arnd@arndb.de, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org,
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        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] netfilter: provide udp*_lib_lookup for nf_tproxy
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 <20180605.105453.339908802413146875.davem@davemloft.net>
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On Tue, Jun 05, 2018 at 10:54:53AM -0400, David Miller wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> Date: Tue,  5 Jun 2018 13:40:34 +0200
> 
> > It is now possible to enable the libified nf_tproxy modules without
> > also enabling NETFILTER_XT_TARGET_TPROXY, which throws off the
> > ifdef logic in the udp core code:
> > 
> > net/ipv6/netfilter/nf_tproxy_ipv6.o: In function `nf_tproxy_get_sock_v6':
> > nf_tproxy_ipv6.c:(.text+0x1a8): undefined reference to `udp6_lib_lookup'
> > net/ipv4/netfilter/nf_tproxy_ipv4.o: In function `nf_tproxy_get_sock_v4':
> > nf_tproxy_ipv4.c:(.text+0x3d0): undefined reference to `udp4_lib_lookup'
> > 
> > We can actually simplify the conditions now to provide the two functions
> > exactly when they are needed.
> > 
> > Fixes: 45ca4e0cf273 ("netfilter: Libify xt_TPROXY")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> 
> Pablo, I'm going to apply this directly to fix the link failure.
> 
> Thanks Arnd.

Thanks David.