PF_DT_SKIP_EXTGWY
if (!(flags & PF_DT_SKIP_EXTGWY))
PF_DT_SKIP_LANEXT|PF_DT_SKIP_EXTGWY);
pf_detach_state(s, PF_DT_SKIP_LANEXT|PF_DT_SKIP_EXTGWY);
pf_detach_state(s, PF_DT_SKIP_EXTGWY);