Look for ETIMEDOUT from connect(), in addition to ECONNREFUSED.

Not perfect, as it takes about 30 seconds to timeout. Need to add
a timer to it.

os/syncd/emulab-sync.c

 /*
  * EMULAB-COPYRIGHT
- * Copyright (c) 2000-2003 University of Utah and the Flux Group.
+ * Copyright (c) 2000-2004 University of Utah and the Flux Group.
  * All rights reserved.
  */
 
@@ -191,7 +191,7 @@ dotcp(barrier_req_t *barrier_reqp, struct in_addr serverip, int portnum)
 			    sizeof(name)) == 0) {
 			break;
 		}
-		if (errno != ECONNREFUSED) {
+		if (errno != ECONNREFUSED && errno != ETIMEDOUT) {
 			perror("connecting stream socket");
 			close(sock);
 			return -1;