How do I force 224.0.0.0/24 to cross routed interfaces?

I tried changing the TTL with Mangle prerouting for PIM to pick them up, but it seems they are being dropped anyway.

Thanks

You need to install and use the multicast package to do that.

That’s the problem. PIM is already setup as it’s supposed to. But it seems it’s not working for link-local.

Are you trying to route an IPv4 multicast subnet over a Link Local IPv6 network?

No, everything IPv4.

But now I put everything in one subnet, activated IP firewall for bridge, and use the bridge filter.