Index: scheduler/auth.c
===================================================================
--- scheduler/auth.c	(revision 11496)
+++ scheduler/auth.c	(working copy)
@@ -1226,6 +1226,8 @@
           netip6[3] = htonl(ip[3]);
 #endif /* AF_INET6 */
 
+	  cupsdNetIFUpdate();
+
           if (!strcmp(mask->mask.name.name, "*"))
 	  {
 #ifdef __APPLE__
@@ -1241,8 +1243,6 @@
 	    * Check against all local interfaces...
 	    */
 
-            cupsdNetIFUpdate();
-
 	    for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
 		 iface;
 		 iface = (cupsd_netif_t *)cupsArrayNext(NetIFList))
Index: scheduler/network.c
===================================================================
--- scheduler/network.c	(revision 11496)
+++ scheduler/network.c	(working copy)
@@ -133,7 +133,10 @@
   */
 
   if (getifaddrs(&addrs) < 0)
+  {
+    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Unable to get interface list - %s", strerror(errno));
     return;
+  }
 
   for (addr = addrs; addr != NULL; addr = addr->ifa_next)
   {
@@ -148,7 +151,10 @@
 #endif
 	) ||
         addr->ifa_netmask == NULL || addr->ifa_name == NULL)
+    {
+      cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Ignoring \"%s\".", addr->ifa_name);
       continue;
+    }
 
    /*
     * Try looking up the hostname for the address as needed...
@@ -178,7 +184,10 @@
 
     hostlen = strlen(hostname);
     if ((temp = calloc(1, sizeof(cupsd_netif_t) + hostlen)) == NULL)
+    {
+      cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Unable to allocate memory for interface.");
       break;
+    }
 
    /*
     * Copy all of the information...