From 06b2c61c92a9942769ee8da22d3ce8b8b935c038 Mon Sep 17 00:00:00 2001
From: Andy Zhou <azhou@nicira.com>
Date: Tue, 19 May 2015 12:41:47 -0700
Subject: [PATCH] ip: remove unused function prototype

ip_do_nat() function was removed prior to kernel 3.4. Remove the
unnecessary function prototype as well.

Reported-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed