0 /* * Byte layout in order, all values with MSB first: * * vm_pool - 1 byte * flow_type - 1 byte * vlan_id - 2 bytes * src_ip - 16 bytes * dst_ip - 16 bytes * src_port - 2 bytes * dst_port - 2 bytes * flex_bytes - 2 bytes * bkt_hash - 2 bytes */