add_filter
int add_filter(u_int32_t, u_int8_t, struct sockaddr *, struct sockaddr *,
if (add_filter(s->id, PF_IN, client_sa, server_sa,
if (add_filter(s->id, PF_OUT, proxy_sa, server_sa,
if (add_filter(s->id, PF_IN, server_sa, client_sa, s->port) ==
if (add_filter(s->id, PF_OUT, orig_sa, client_sa, s->port) ==
add_filter(filt_unit, filt_ep);