I've got another problem.
I wanted to try nightly 2.6 (before it got stable), and two days later, I can't call to another user on the same network.
Now we are using GetOnSIP and Jitsi 2.6 stable. When user PC1 calls user PC2, PC1 receives a call from himself, even he's calling to PC2, but PC2 never gets any call notification.
Chats are on the same situation, chatting PC1 > PC2 results in chatting PC1 > PC1.
Despite of that, if user PC1 calls user MO1 (Android CSipSimple), it calls correctly.
Deleting %appdata%\Jitsi doesn't fix nothing.