=== modified file 'plugins.d/mandos-client.c'
--- plugins.d/mandos-client.c	2011-03-21 19:22:27 +0000
+++ plugins.d/mandos-client.c	2011-03-21 19:34:39 +0000
@@ -1113,6 +1113,14 @@
     }
     return 0;
   }
+  /* Reject non-ARP interfaces (including dummy interfaces) */
+  if(flags & IFF_NOARP){
+    if(debug){
+      fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
+	      if_entry->d_name);
+    }
+    return 0;
+  }
   /* Accept this device */
   if(debug){
     fprintf(stderr, "Interface \"%s\" is acceptable\n",