AXE_CSUM_FEATURES
AXE_CSUM_FEATURES) != 0)
if_sethwassistbits(ifp, AXE_CSUM_FEATURES, 0);
if_sethwassistbits(ifp, 0, AXE_CSUM_FEATURES);
if_sethwassist(ifp, AXE_CSUM_FEATURES);