NPF_RULE_STATEFUL
if ((mi.mi_retfl & NPF_RULE_STATEFUL) != 0 && !con) {
mi->mi_retfl |= (NPF_RULE_PASS | NPF_RULE_STATEFUL |
mi->mi_retfl &= !(NPF_RULE_PASS | NPF_RULE_STATEFUL |
stateful = (npf_rule_getattr(rl) & NPF_RULE_STATEFUL) != 0;
: STATEFUL { $$ = NPF_RULE_STATEFUL; }
| STATEFUL_ALL { $$ = NPF_RULE_STATEFUL | NPF_RULE_GSTATEFUL; }
#define STATEFUL_ALL (NPF_RULE_STATEFUL | NPF_RULE_GSTATEFUL)