The router should get the MAC address by ARPing. Try to capture the ARPs.
If the router is fast-switching, then you wouldn't catch the ARPs unless
you clear the ARP table on the router first, (which it sounds like you
can't do since you don't have access to the router.) But this may not be a
p
First. Thank you very much answering my question.
Let me clarify some background about this MAC-address case.
We have many different IP-subnets at same side of router.
Please don't ask me why, it's too long story to tell here :-)
Some of traffic which goes to router and back is targeted at
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