PF_RULESET_NAT   2423 net/pf.c       			    saddr, sport, daddr, dport, PF_RULESET_NAT);
PF_RULESET_NAT    123 net/pf_ruleset.c 		return (PF_RULESET_NAT);
PF_RULESET_NAT     64 net/pfvar.h    enum	{ PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,