Ok, for User2 i added in Xlite Domain : 10.10.10.2 Proxy : 192.168.0.2
And i am able to call User1, and User1 is able to call User2.
Now the problem is i there is no RTP packets :s. That's weird because i enable rtpproxy with bridge mode, with the command : rtpproxy -l 10.10.10.2 192.168.0.2 -s udp:127.0.0.1:7890. Obviously in my .conf file kamailio is listening on udp:127.0.0.1:7890.
Cheers