MAC#: 00:00:00:00:06:00 appearing in Dude Device?

RouterOS The Dude
1

Sir,
In Dude a strange Mac addresses (“00:00:00:00:06:00”) is turning up under the 'General" tab in Devices … in additiopn to the ‘real’ MAXC address..
Any ideas as to where this Mac# is coming from?

2

same problem here, device also shows down but is clearly still working well.

3

up. some problem.