PFSTATE_DN_IS_PIPE
if (s->state_flags & PFSTATE_DN_IS_PIPE)
st->state_flags |= PFSTATE_DN_IS_PIPE;
st->state_flags &= ~PFSTATE_DN_IS_PIPE;
if (r->free_flags & PFRULE_DN_IS_PIPE || pd->act.flags & PFSTATE_DN_IS_PIPE)
a->flags |= PFSTATE_DN_IS_PIPE;
a->flags &= ~PFSTATE_DN_IS_PIPE;