diff --git a/contrib/net-tools b/contrib/net-tools
index a88aa2ac..580c05ec 100644
--- a/contrib/net-tools
+++ b/contrib/net-tools
@@ -80,7 +80,7 @@ _route()
     prev=${COMP_WORDS[COMP_CWORD-1]}
 
     if [ "$prev" = dev ]; then
-        COMPREPLY=( $( ifconfig -a | sed -ne 's|^\('$cur'[^ ]*\).*$|\1|p' ))
+        _available_interfaces
         return 0
     fi