I have a home network with a Routerboard 750G r2 running RouterOS 6.49.13. There’s an “IoT” VLAN for all the nasty consumer devices that want Internet connectivity for whatever shifty privacy-violating reason. There’s also the “real” network (not a VLAN) for the stuff that matters.

On the IoT VLAN is a Tempest weather station hub. Every few seconds, this chirps out broadcast UDP packets to port 50222 containing mildly interesting weather data.

I’d like to echo these packets (i.e., only UDP packets from the IoT VLAN where the destination port is 50222) to the “real” network, for the purposes of absorbing them with WeeWX.

I’ve tried various experiments with dst-nat, netmap and mangle rules, but the magic recipe continues to elude me.

Is there a way within RouterOS to do what I want?