diff --git a/Shorewall/Perl/Shorewall/IPAddrs.pm b/Shorewall/Perl/Shorewall/IPAddrs.pm
index f8a1697c8..aff714f3b 100644
--- a/Shorewall/Perl/Shorewall/IPAddrs.pm
+++ b/Shorewall/Perl/Shorewall/IPAddrs.pm
@@ -281,7 +281,7 @@ sub decompose_net( $ ) {
     my $net = $_[0];
 
     ( $net, my $vlsm ) = validate_net( $net , 0 );
-    ( ( $family == F_IPV4 ? encodeaddr( $net) : $net )  , $vlsm );
+    ( ( $family == F_IPV4 ? encodeaddr( $net) : normalize_6addr( $net ) )  , $vlsm );
 
 }