LAN Servers are restricted to local clients (Class C)November 3rd, 2013 by Brentonator Currently, the server browser is listing servers that are LAN-Only. When you get this error, "LAN Servers are restricted to local clients (Class C)" you should not try to connect to that server again and try another one in the server browser.
Valve is working on removing the sv_lan 1 servers from the server browser. There is an issue with either Source SDK or the Steam Master Server List.
If it is your server that is having this issue, please enter the following commands into console in order to correct this issue.
- sv_lan 0
- changelevel nmo_broadway