sockaddr_dl_measure
socksize = roundup(sockaddr_dl_measure(namelen, addrlen),
mask->sdl_len = sockaddr_dl_measure(namelen, 0);
uint8_t sockaddr_dl_measure(uint8_t, uint8_t);
len = sockaddr_dl_measure(namelen, addrlen);
len = sockaddr_dl_measure(namelen, addrlen);
len = sockaddr_dl_measure(sdl->sdl_nlen, addrlen);
gate->sa_len < sockaddr_dl_measure(0, ifp->if_addrlen)) {
sockaddr_dl_measure(namelen, addrlen)) {