Having a close(SOCK) seems to help mirepoix for some reason.

bin/tests/system/testsock.pl

@@ -15,7 +15,7 @@
 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 # SOFTWARE.
 
-# $Id: testsock.pl,v 1.5 2000/06/25 02:30:18 gson Exp $
+# $Id: testsock.pl,v 1.6 2000/06/26 17:53:25 bwelling Exp $
 
 # Test whether the interfaces on 10.53.0.* are up.
 
@@ -35,4 +35,5 @@ for ($id = 1 ; $id < 6 ; $id++) {
 	bind(SOCK, $sa)
 	    	or die sprintf("$0: bind(%s, %d): $!\n",
 			       inet_ntoa($addr), $port);
+	close(SOCK);
 }