bif_peer_port
if (bif->bif_peer_port <= sc->sc_designated_port)
sc->sc_designated_port = bif->bif_peer_port;
if (bif->bif_peer_port > designated_port)
if (bif->bif_peer_port < designated_port)
designated_port = bif->bif_peer_port;
bif->bif_peer_port = 0xFFFFU;
bif->bif_peer_port = cu->cu_port_id;
req->ifbr_peer_port = bif->bif_peer_port;
req->ifbr_designated_port = bif->bif_peer_port;