I have a bridge configured with 3 L2TP VPNs and 3 ethernet ports.
When I get UNICAST data across my network, regardless of what/where it is supposed to go, the system is BROADCASTING it out to all L2TP VPNs and ports, using huge amounts of traffic.
The Hosts list is all correct, everything else seems OK. Tried no firewall/bridge rules, tried putting them in. Tried “Use IP Firewall” both on and off. Tried fast path on and off. Nothing makes any difference.
It’s like the bridge just isn’t working as it should.
Looking at the packet sniffer it appears that the source and destination MACs are getting stripped out. Therefore I guess the bridge treats it as broadcast, since it clearly has no idea where to send to/from.
Interestingly all the L2TP clients are showing up as “Slave” in the interfaces list - any idea what they are supposed to be slaves of?
This is all very confusing and I can’t get my head around why exactly it is behaving in this way. It doesn’t seem to do this also with all traffic either which is even more odd. Just my high bitrate audio stream, which is about the worst thing to be broadcasted around the entire network.