Recently I found a bug with numbering four (and probably more) vmxnet3
interfaces under ESXi 6.5 (FreeBSD 11.0-RELASE, 10.0-RELEASE and ESXi 5.5U1

It seems that this is an old bug
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198406 :
Just reproduced this bug on ESXi 6.5 with FreeBSD 11.0-RELEASE-p9 with four
vmxnet3 interfaces

Obviously problem goes from wrong FreeBSD vmx interface numbering in
compare to VM ethernet interface order.

In my case mapping was follows:
ethernet0 -> vmx1
ethernet1 -> vmx2
ethernet2 -> vmx3
ethernet3 -> vmx0

I think something goes wrong on PCI probing/mapping stage.
I've tried (not all options) to change pci bus numbers for ethernet
interfaces in vmx config but without success.

Is any chance to fix it?

If I fix it by taking into account vmx renumbering, VM migration will
problem in future, if this is pci probe issue.

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