Based on the discussions about outbound and in-dialog routing it seems like we need to use GRUU and live with the fact that the route-set changes (in breach of RFC 3261).
Can anyone share a Kamailio registrar configuration that uses GRUU to look-up in-dialog requests (preferably one that makes use of t_load_contacts(), t_next_contact(), and t_next_contact_flow())?
Regards,
Peter