Freaking hell, I just spent 30 minutes trying to unravel a router mystery. Ended up that both of my CCR Mikrotik routers had THE SAME MAC ADDRESSES between them!
They are identical. Every port had a consecutive MAC number, but they were the same numbers for both the SFP and GigE ports across the two routers. I'm guessing they flashed them both at the manufacturer the exact same, then didn't make it through a MAC renumbering. Or is this common with Mikrotik now days? I'm sure I've encountered it before, but like once every five years. Just a FYI for all y'all who use Mikrotiks. Watch your backs (I mean MACs)!
