Hello everyone!
I have the following setup. I installed the Netbird client (development version) on FreeBSD inside OpnSense and want to use it as a Routing Peer (https://docs.netbird.io/how-to/networks) so that other Netbird clients could send all their traffic to 0.0.0.0/0 through it. In OpnSense traffic monitoring I see that all incoming and outgoing client traffic goes through the WAN interface, and the Netbird interface itself (I called it "ntbrd0") does not show any traffic. Accordingly, IDS does not show any events on this interface. Netbird works on top of wireguard, and the wireguard instance I created through the VPN section inside the OpnSense web interface correctly displays the traffic passing through its interface ("wg0"). At the same time, in the VPN wireguard section I see that the ntbrd0 interface pumps a lot of traffic through itself.
Very strange behavior, any ideas why this might happen?
P.S> tcpdump on freebsd also does not see traffic on the ntbrd0 interface, except for what comes to the OpnSense address when accessing the web interface. I press buttons on the web interface and see the packets intercepted by tcpdump.
P.S.2> In the Netbird client configuration on OpnSense, the interface for work is specified correctly - ntbrd0.