Request to enable hostnames in 'Add Port Group' dialog

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Use of a valid fully qualified domain name in the dialog fails

What is the expected output? 
Expect name -> ip resolution

What version and revision of the product are you using (available in the
About dialog)? On what operating system?
Version 0.7, Windows


Please provide any additional information below.

Original issue reported on code.google.com by pcuttr...@arista.com on 11 Jun 2015 at 5:00

[pstavirs]

Apart from hostnames, IPv6 addresses and hostnames resolving to IPv6 addresses should also be supported