Multicast between two IPSec connected networks

I have a program that uses multicast to address 231.0.0.1 to inform other instansces of the same program on other machines in the network of certain events.

Now i have a situation where the program is running in two different networks (lets call them 192.168.0.0/24 and 192.168.1.0/24), connected through an IPSec tunnel.

I have tried to install the multicast package and read about both IGMP-proxy and PIM, but have ended none the wiser, first of all since the both seem to require (at least) two interfaces, and second that I need it wo be bidirectional.

For reference am i using RB750 with RouterOS v5.26 in both ends.

Has anyone tried something like this?