From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 6 Mar 2007 12:20:10 +1100

Hi Dave:

[UDP6]: Restore sk_filter optimisation

This reverts the changeset

    [IPV6]: UDPv6 checksum.

    We always need to check UDPv6 checksum because it is mandatory.

The sk_filter optimisation has nothing to do whether we verify the
checksum.  It simply postpones it to the point when the user calls
recv or poll.

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

Applied, thanks.