-def $MUNIN_IPS = (<%= v4ips.split(',').join(' ') %>);
-def $MUNIN6_IPS = (<%= v6ips.split(',').join(' ') %>);
+def $MUNIN_IPS = (<%=
+begin
+ scope.lookupvar('::v4ips').split(',').join(' ')
+rescue
+ ''
+end
+%>);
+def $MUNIN6_IPS = (<%=
+begin
+ scope.lookupvar('::v6ips') == '' ? '' : scope.lookupvar('::v6ips').split(',').join(' ')
+rescue
+ ''
+end
+%>);
domain ip {
chain INPUT {