I have noticed that my Haiku Fan has, apparently, changed its MAC address and therefore it has messed up my static IP assignment and caused a failure with @zackrbrown 's much appreciated driver. To be precise it is only the first 6 characters of the MAC address that changed.
Has anyone else seen this behavior with their Haiku fans? Any known causes? If so, any fixes or methodologies to avoid the issue?
That's really strange that it changed. Was there a recent firmware update to it that could have rewritten the network portion (I've never seen that before in any device except virtual network cards and even then they still use the parent portion of the physical mac)
I've had it happen with Sonos. The culprit was a TP-Link wi-fi extender. Apparently, the wi-fi had a weak moment and the Sonos switched to the extender. IIRC, the extender changed the first characters of the mac.
@rcjordan RC, this is very interesting as I am on a TP-Link Deco X60 system and additionally I have a TP-Link extender in use to provide my Hubitat with an ethernet port. The later is a long story involving our newly constructed home and some loose ends including ethernet cables that do not work.
A few days ago, I lost my connection to the Hubitat and I had to restart and reset a few things to get the extender back up and running.
All that said it does seem very odd that an extender would change the structure of a device's MAC address. @rlithgow1 Rick mentions something about a "parent portion" of a MAC address.
I know very little about MAC addresses and have assumed that unless masked in some way, e.g. iPhone's recent changes, that the MAC address on a device was a "built-in" property that was immutable.