Client problem!

So when i change my client ip from 127.0.0.1 for example to my lan ip: 192.168.100.42, i cannot login: no errors, nothing happens on login server or game server..
i have changed my ip on server config from 127.0.0.1 > 192.168.100.42 too.

Everything works with 127.0.0.1 but not with any other ips, ports are forwarded..

So whats wrong?
Thanks