diff -up cups-1.3.8/config.h.in.res_init cups-1.3.8/config.h.in
--- cups-1.3.8/config.h.in.res_init	2008-09-03 15:34:23.000000000 +0100
+++ cups-1.3.8/config.h.in	2008-09-03 15:34:52.000000000 +0100
@@ -365,6 +365,13 @@
 
 
 /*
+ * Do we have __res_init()?
+ */
+
+#undef HAVE_RES_INIT
+
+
+/*
  * Do we have hstrerror()?
  */
 
diff -up cups-1.3.8/config-scripts/cups-network.m4.res_init cups-1.3.8/config-scripts/cups-network.m4
--- cups-1.3.8/config-scripts/cups-network.m4.res_init	2007-12-19 01:47:57.000000000 +0000
+++ cups-1.3.8/config-scripts/cups-network.m4	2008-09-03 15:34:14.000000000 +0100
@@ -18,6 +18,7 @@ AC_SEARCH_LIBS(gethostbyaddr, nsl)
 AC_SEARCH_LIBS(getifaddrs, nsl, AC_DEFINE(HAVE_GETIFADDRS))
 AC_SEARCH_LIBS(hstrerror, nsl socket resolv, AC_DEFINE(HAVE_HSTRERROR))
 AC_SEARCH_LIBS(rresvport_af, nsl, AC_DEFINE(HAVE_RRESVPORT_AF))
+AC_SEARCH_LIBS(__res_init, resolv bind, AC_DEFINE(HAVE_RES_INIT))
 
 # Tru64 5.1b leaks file descriptors with these functions; disable until
 # we can come up with a test for this...
diff -up cups-1.3.8/scheduler/cups-polld.c.res_init cups-1.3.8/scheduler/cups-polld.c
--- cups-1.3.8/scheduler/cups-polld.c.res_init	2008-01-08 00:16:30.000000000 +0000
+++ cups-1.3.8/scheduler/cups-polld.c	2008-09-03 15:34:14.000000000 +0100
@@ -155,6 +155,18 @@ main(int  argc,				/* I - Number of comm
       restart_polling = 0;
       httpClose(http);
 
+#ifdef HAVE_RES_INIT
+      if (!http)
+      {
+       /*
+	* Reinit the resolver so that it doesn't cache a previous
+	* hostname lookup failure.  This fixes the situation where a
+	* network interface becomes available after polling starts.
+	*/
+	__res_init ();
+      }
+#endif /* HAVE_RES_INIT */
+
       if ((http = httpConnectEncrypt(argv[1], atoi(argv[2]),
                                      cupsEncryption())) == NULL)
       {