Ignoring Record-Route in 200 Ok

Hi,

Remote proxy sends back to the SBC 200 OK containing Record-Route header.
As the returned RR value is an FQDN and there is no DNS in the network, when the originating client sends an ACK (no Route header inside) as response to the 200 OK, the SBC tries to route according to the RR but fails to resolve the FQDN (no DNS) and does not forward the ACK.

Is there a way to have the SBC ignore the RR and route according the the local-policy as it did for the original INVITE ?
Other ideas ?

A solution the works is to use an HMR to replace the FQDN by the proxy IP address but I wonder if there is a more elegant/built in solution.