NETIF_F_V6_CSUM   149 include/linux/netdev_features.h #define NETIF_F_ALL_CSUM	(NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
NETIF_F_V6_CSUM  3453 include/linux/netdevice.h 		((features & NETIF_F_V6_CSUM) &&