but ssh itself (which iirc is what rancher uses for bridging things) doesn't support forwarding udp. You can apparently cheat: https://superuser.com/questions/53103/udp-traffic-through-ssh-tunnel That should be possible by doing a

kubectl run ...

to create a pod that has ssh/nc/mkfifo and do the inside forwarding there and connect your own forward on the outside

Note that while UDP forwarding isn't implemented, you should be able to use UDP over the shared/bridged network adapter. You must run Rancher Desktop with admin privileges to get those though. And I'm just talking about macOS here. Not sure if this could work on Windows or Linux.