Thanks Daniel! For our configuration `mhomed` is not working well. Besides the documentation states that the incoming socket would be used by default (as long as we don't switch protocol) which is why I reported this as a bug. I would expect consistency between the first and any subsequent branches in a DNS SRV failover scenario.
``` When deactivated, the incoming socket will be used or the first one for a different protocol, disregarding the destination location. ``` Source: https://www.kamailio.org/wiki/cookbooks/5.2.x/core#mhomed