try both SO_REUSEADDR and SO_REUSEPORT if available
try both SO_REUSEADDR and SO_REUSEPORT if available


kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1