Comments by dbraseth (Top 2 by date)

- I replaced 'vWrkStn' with 'Environment.MachineName' and declared 'IP4 as IPAddress = null' before the loop. Then if IP4 is not null after the loop, return IP4.ToString.
Also, you need to import/use the System.Net.Sockets namespace, and the first line is never used ("Dim ipE..", etc.)
HTH :)