From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 6 Feb 2009 00:01:49 +1100

ipv6: Copy cork options in ip6_append_data

As the options passed to ip6_append_data may be ephemeral, we need
to duplicate it for corking.  This patch applies the simplest fix
which is to memdup all the relevant bits.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Great work, applied.