diff -up cups-1.6b1/cups/http-addr.c.res_init cups-1.6b1/cups/http-addr.c
--- cups-1.6b1/cups/http-addr.c.res_init	2012-05-17 00:57:03.000000000 +0200
+++ cups-1.6b1/cups/http-addr.c	2012-05-25 15:51:51.323916352 +0200
@@ -254,7 +254,8 @@ httpAddrLookup(
 
     if (error)
     {
-      if (error == EAI_FAIL)
+      if (error == EAI_FAIL || error == EAI_AGAIN || error == EAI_NODATA ||
+          error == EAI_NONAME)
         cg->need_res_init = 1;
 
       return (httpAddrString(addr, name, namelen));
diff -up cups-1.6b1/cups/http-addrlist.c.res_init cups-1.6b1/cups/http-addrlist.c
--- cups-1.6b1/cups/http-addrlist.c.res_init	2012-04-23 19:26:57.000000000 +0200
+++ cups-1.6b1/cups/http-addrlist.c	2012-05-25 16:05:05.930377452 +0200
@@ -540,7 +540,8 @@ httpAddrGetList(const char *hostname,	/*
     }
     else
     {
-      if (error == EAI_FAIL)
+      if (error == EAI_FAIL || error == EAI_AGAIN || error == EAI_NODATA ||
+          error == EAI_NONAME)
         cg->need_res_init = 1;
 
       _cupsSetError(IPP_INTERNAL_ERROR, gai_strerror(error), 0);