I have Mac1 connected via ethernet to a router. The Mac1 has the IP On this IP I have a Python-server listening to incoming UDP packets.

Now there is another Mac2 connected to Mac1 via a Thunderbolt-Ethernet Adapter. The IP of Mac1 on this adapter is Mac2 sends UPD packets to this address.

How can i route this traffic internally on Mac1 from to

Both machines are on MacOS 10.10

Thanks a lot!

1 Answer 1


There is no need to route anything. Just let the python-server also listen to incoming UDP packets at eth2 ( assuming eth2 is the TB-Ethernet interface.

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