Thanks @epopov . It will be great if we can have a PR for dev/ipv6_integration branch. We will be happy to help you in every possible way in the process and merge the same in the branch.
Hi @xerox
For the use case that you specified, we will need IGMP parsing, Group create, join and leave functionalities.
Yes, The changes for @epopov at GitHub - evpopov/FreeRTOS-Plus-TCP at Multicasts_Draft_2 support the same.