Hi, I ran into some issues with re-invite and nat. Ser uses "lookup" location to load the flag of a NATted callee. Because re-invite already knows the callee's contact, it uses loose-route. It doesn't call "lookup". The problem is that if the callee is behind NAT, ser can't tell. Since the ruri of re-invite is already in the location table, I wonder if we can have another function to find it in the location table and load the flag. Does it make sense? Thanks, Richard