linux-kernel - Re: [PATCH v2] net: netfilter: Fix undefined reference to nf_nat_redirect

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Message-ID: <20141126102402.GA24801@breakpoint.cc>
Date:	Wed, 26 Nov 2014 11:24:02 +0100
From:	Florian Westphal <fw@...len.de>
To:	Andreas Ruprecht <rupran@...server.de>
Cc:	Pablo Neira Ayuso <pablo@...filter.org>,
	Patrick McHardy <kaber@...sh.net>,
	Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
	"David S. Miller" <davem@...emloft.net>,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: netfilter: Fix undefined reference to
 nf_nat_redirect_* functions

Andreas Ruprecht <rupran@...server.de> wrote:
> Additionally it is necessary to provide stubs for the
> nf_nat_redirect_ipv{4,6} functions in case the header is included but
> the corresponding Kconfig feature is not enabled.

Hmmm, not following.

Can you elaborate?

Under which circumstances do we have a call to nf_nat_redirect_ipv4()
(i.e., linker error) but can safely do a noop operation instead of the
requested nat redirect...?
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