etherbridge_get_max
error = etherbridge_get_max(&sc->sc_eb, bparam);
int etherbridge_get_max(struct etherbridge *, struct ifbrparam *);
error = etherbridge_get_max(&sc->sc_eb, bparam);
error = etherbridge_get_max(&sc->sc_eb, bparam);
error = etherbridge_get_max(&sc->sc_eb, bparam);