[OpenSER-Users] record_route_preset with dynamic external IP address

Hi, In this scenario: User agents: UA1-192.168.1.1 UA2-192.168.1.2 UA3-192.168.1.3 All register with internal proxy: Openser-192.168.1.20 -> Nat-1.2.3.4 -> Termination server. Openser contacts the terminating server using the UAC module. On the internal Openser I record-route all calls to make sure the whole dialog passes over the proxy to be able to do accounting. However if I do: record_route_preset("1.2.3.4:5060"); and 1.2.3.4 is a dynamic IP address it seems it will be tricky to keep the record route updated. Is the answer that I need not be doing a record-route at all, as all packets will pass over the proxy anyway due to the UAC module, or is there some way to use records-route-preset with dynamic ip addresses? Thanks, Richard