RMNET_FLAGS_EGRESS_MAP_CKSUMV4 1015 include/uapi/linux/if_link.h #define RMNET_FLAGS_EGRESS_MAP_CKSUMV4            (1U << 3)
RMNET_FLAGS_EGRESS_MAP_CKSUMV4 1015 tools/include/uapi/linux/if_link.h #define RMNET_FLAGS_EGRESS_MAP_CKSUMV4            (1U << 3)