* lisp/ffap.el (ffap-machine-p): Handle "not known" response.

Fixes: debbugs:14929

lisp/ChangeLog

+2013-07-24  Glenn Morris  <rgm@gnu.org>
+
+	* ffap.el (ffap-machine-p): Handle "not known" response.  (Bug#14929)
+
 2013-07-24  Michael Albinus  <michael.albinus@gmx.de>
 
 	* filenotify.el (file-notify-supported-p):

lisp/ffap.el

@@ -459,7 +459,8 @@ Returned values:
 	   (let ((mesg (car (cdr error))))
 	     (cond
 	      ;; v18:
-	      ((string-match "^Unknown host" mesg) nil)
+	      ((string-match "\\(^Unknown host\\|Name or service not known$\\)"
+			     mesg) nil)
 	      ((string-match "not responding$" mesg) mesg)
 	      ;; v19:
 	      ;; (file-error "connection failed" "permission denied"