On Thursday 27 January 2011, Klaus Darilion wrote:
Alex, do you also do NAT keep-alive from the proxies? If yes, are you sending them from both servers at the same time?
No, we require clients to sent nat-keepalives. It is much more efficient. In addition, the registrars are not directly accessible by clients, they go via load-balancers. Clients keep the NAT binding with the balancer, not the registrar.