ipvs: fix ipv6 hook registration for local replies

ipvs: fix ipv6 hook registration for local replies

commit eb90b0c734ad793d5f5bf230a9e9a4dcc48df8aa upstream.

commit fc604767613b6d2036cdc35b660bc39451040a47
("ipvs: changes for local real server") from 2.6.37
introduced DNAT support to local real server but the
IPv6 LOCAL_OUT handler ip_vs_local_reply6() is
registered incorrectly as IPv4 hook causing any outgoing
IPv4 traffic to be dropped depending on the IP header values.

Chris tracked down the problem to CONFIG_IP_VS_IPV6=y
Bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1349768

Reported-by: Chris J Arges <chris.j.arges@canonical.com>
Tested-by: Chris J Arges <chris.j.arges@canonical.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>