I've played with doubango for some time trying to get it to work against the flavor of IMS used in VoLTE / VoWiFi, and it is not all that close to it, even with

I've played with doubango for some time trying to get it to work against the flavor of IMS used in VoLTE / VoWiFi, and it is not all that close to it, even with various hacks applied from https://gitea.osmocom.org/ims-volte-vowifi/doubango/commits/branch/laforge/wip https://gitea.osmocom.org/ims-volte-vowifi/doubango/commits/... in which I tried to add a Linux kernel IPsec plugin as well as various other bits and pieces.