VPN Tab error " regular expression"

Greetings everyone I am in the process of reinstalling my Neth Server again after making a big mistake… Yep you bet i did it again…

First thing first I am getting this weird error on the re-installation everything networking wise seems ok slightly confused as to what this jibber jabber is…

Screen shot VPN error

That’s not a valid network.

Try with:
192.168.1.0 (be careful, this MUST be different from the server network)
255.255.255.0

That worked thanks so much!!