IPS_SRC_NAT_BIT 45 include/linux/netfilter/nf_conntrack_common.h IPS_SRC_NAT_BIT = 4, IPS_SRC_NAT_BIT 46 include/linux/netfilter/nf_conntrack_common.h IPS_SRC_NAT = (1 << IPS_SRC_NAT_BIT),