undionly no packets received

[NiKiZe]

You are using undionly so a bug in the undi stack is one guess.
Have you tried ipxe.pxe instead which should have native drivers for that nic?
Some newer hardware have a less tested undi stack, so testing in efi mode with snponly.efi might also be interesting to see just how much is broken.

make bin/undionly.kpxe DEBUG=unidonly
should enable debug output that might give you some more insight on what is going wrong.

as you said yourself iPXE is working on other hardware, so I think your subject is wrong, it is the UNDI stack not working, so will update the subject.

There is other threads with mostly the same problem, see here for example.