netdev - Re: [PATCH net-next] netfilter: fix NETFILTER_XT_TARGET

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Message-ID: <20180706124542.jybscbmzixyt4rx2@salvia>
Date:   Fri, 6 Jul 2018 14:45:42 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Máté Eckl <ecklm94@...il.com>,
        Fernando Fernandez Mancera <ffmancera@...eup.net>,
        "Pablo M. Bermudo Garay" <pablombg@...il.com>,
        Felix Fietkau <nbd@....name>, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] netfilter: fix NETFILTER_XT_TARGET_TEE
 dependencies

On Fri, Jul 06, 2018 at 02:37:58PM +0200, Arnd Bergmann wrote:
> With NETFILTER_XT_TARGET_TEE=y and IP6_NF_IPTABLES=m, we get a link
> error when referencing the NF_DUP_IPV6 module:
> 
> net/netfilter/xt_TEE.o: In function `tee_tg6':
> xt_TEE.c:(.text+0x14): undefined reference to `nf_dup_ipv6'
> 
> The problem here is the 'select NF_DUP_IPV6 if IP6_NF_IPTABLES'
> that forces NF_DUP_IPV6 to be =m as well rather than setting it
> to =y as was intended here. Adding a soft dependency on
> IP6_NF_IPTABLES avoids that broken configuration.

Applied to nf.git, thanks Arnd.