# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-01-11 09:18:13 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/819111161476116481) In reply to: [@burf2000](http://twitter.com/burf2000/status/819107488259829761) @burf2000 ... But maybe use a while loop instead and all ifaddr.successor() and check if it's null