net: ipv6: make "ip -6 route get mark xyz" work.
net: ipv6: make "ip -6 route get mark xyz" work.

Currently, "ip -6 route get mark xyz" ignores the mark passed in
by userspace. Make it honour the mark, just like IPv4 does.

Signed-off-by: Lorenzo Colitti <86995a091f8a1385082bd10715048b52ee386a6a@google.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs