XT_TCP_INV_MASK    47 include/uapi/linux/netfilter_ipv4/ip_tables.h #define IPT_TCP_INV_MASK	XT_TCP_INV_MASK
XT_TCP_INV_MASK    47 include/uapi/linux/netfilter_ipv6/ip6_tables.h #define IP6T_TCP_INV_MASK	XT_TCP_INV_MASK