Arista MAC Address Issue

Hi all -

I've got an issue whereby when I do a "show mac-address table" on an Arista switch connected to a Cisco switch, the MAC which is learned by the Cisco is different from the MAC address on the Arista itself.

I have 4x instances of this. Sometimes it's very similar, but still different.

e.g.,

MAC learned ends in c9f6, but MAC showing on Arista port ends c9f5.

Other times, the MACs are quite different indeed.

e.g.,

MAC learned ends 0600, but MAC showing on Arista port ends 05ff.

What's more, I can't actually see the "learned" MAC anywhere on the Arista device. (i.e., do a "show interfaces" command and grep/ctrl+f for the learned MAC address and no results).

Any thoughts?