ifmedia_get
struct ifmedia_entry *ifmedia_get(struct ifmedia *, uint64_t, uint64_t);
match = ifmedia_get(ifm, target, ifm->ifm_mask);
match = ifmedia_get(ifm, target, ifm->ifm_mask);
match = ifmedia_get(ifm, target, ifm->ifm_mask);
match = ifmedia_get(ifm, newmedia, ifm->ifm_mask);
match = ifmedia_get(ifm, target, mask);