For IPv6, if the device indicates that the checksum is correct, set
CHECKSUM_UNNECESSARY.
Reported-by: NSubbarao Narahari <snarahari@vmware.com>
Signed-off-by: NShrikrishna Khare <skhare@vmware.com>
Signed-off-by: NJin Heo <heoj@vmware.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>