eigrp_applymask
eigrp_applymask(*family, addr, addr, mask);
void eigrp_applymask(int, union eigrpd_addr *,
eigrp_applymask(rinfo.af, &rinfo.prefix, &rinfo.prefix,
eigrp_applymask(af, addr, addr, *plen);
eigrp_applymask(kr->af, &addr, &kr->prefix,
eigrp_applymask(af, &ri->prefix, &ri->prefix, ri->prefixlen);