leiweibau/Pi.Alert

[Bug] Fixed MAC addresses are detected as "Random MAC"

Closed this issue · 2 comments

waywit commented

Is there an existing issue for this?

  • I have searched the existing issues and the Help/FAQ section of Pi.Alert

Current Behavior

I have different AVM FritzRepeater 2400, 3000 and 3000 AX in my network. All with fixed IPs over pi.hole DHCP MAC mappings, but they are all detected as "Random MAC". I also have this issue with some of my proxmox lxc and VMs, but some are detecxted correctly. I have no idea how this mechanism works and a random MAC is detected, so I have no idea what to change?!?!

Environment

Raspberry Pi 4 with 4 GB RAM and SSD boot drive, newly setup with actual RaspiOS together with a pi.hole installed. Pi.Hole is DHCP and DNS server in network. Fritzbox 7590 for internet access without DHCP.

Anything else?

Perhaps this is no Bug, but I have no Idea what I can do to remove these "Random Mac" badge, because of this I cannont use the Manufacturer field... :-( Perhaps someone can help me with that.

By the way, great piece of software and a lot better then the original version I used some years ago....

This is not a bug.

I have no idea how this mechanism works and a random MAC is detected, so I have no idea what to change

MAC address schemes are classified as "random" MAC addresses:
x2:xx:xx:xx:xx:xx:xx
x6:xx:xx:xx:xx:xx:xx
xA:xx:xx:xx:xx:xx:xx
xE:xx:xx:xx:xx:xx:xx

You can find out more about the background here (IEEE 802c local MAC address usage).
https://en.wikipedia.org/wiki/MAC_address#Locally_administered_address

By the way, great piece of software and a lot better then the original version I used some years ago....

Thanks for the praise

Is marked here (#312) as a topic to be documented.