From 21b4520d47788d98126da05e628abdbf6fa807af Mon Sep 17 00:00:00 2001
From: David Lamparter <equinox@opensourcerouting.org>
Date: Sun, 19 Apr 2015 14:54:03 +0200
Subject: [PATCH] ospf6d: fix pointer arithmetic warning

caddr_t was signed; this buffer size comparison is better done in
unsigned.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
(cherry picked from commit 3cf4053a9e832408fad33a8246ecbd189f23a956)