Currently evaluating the nat_traversal module in some tests, and trying to configure keepalives for registers. We currently use nathelper, but due to the distributed nature of our setup, nat_traversal seems more appropriate for the keepalive functionality (nathelper is sending keepalives from every node).

I am calling nat_keepalive() before save(), but no keepalives are being sent. The documentation suggests that is all there is to it, but maybe I'm missing something. There are no errors in the log that I can see. 

Any ideas?

Many thanks,