--- ./keepalived/check/check_data.c.bad	2009-09-24 12:24:25 +0200
+++ ./keepalived/check/check_data.c	2010-04-02 11:19:02 +0200
@@ -250,10 +250,10 @@
 		new->vsgname = (char *) MALLOC(size + 1);
 		memcpy(new->vsgname, port, size);
 	} else if (!strcmp(ip, "fwmark")) {
-		new->vfwmark = atoi(port);
+		new->vfwmark = port ? atoi(port) : 0;
 	} else {
 		inet_ston(ip, &new->addr_ip);
-		new->addr_port = htons(atoi(port));
+		new->addr_port = port ? htons(atoi(port)) : 0;
 	}
 	new->delay_loop = KEEPALIVED_DEFAULT_DELAY;
 	strncpy(new->timeout_persistence, "0", 1);
@@ -278,7 +278,7 @@
 	vs->s_svr = (real_server *) MALLOC(sizeof (real_server));
 	vs->s_svr->weight = 1;
 	inet_ston(ip, &vs->s_svr->addr_ip);
-	vs->s_svr->addr_port = htons(atoi(port));
+	vs->s_svr->addr_port = port ? htons(atoi(port)) : 0;
 }
 
 /* Real server facility functions */
@@ -324,7 +324,7 @@
 	new = (real_server *) MALLOC(sizeof (real_server));
 
 	inet_ston(ip, &new->addr_ip);
-	new->addr_port = htons(atoi(port));
+	new->addr_port = port ? htons(atoi(port)) : 0;
 	new->weight = 1;
 	new->failed_checkers = alloc_list(free_failed_checkers, NULL);