Same problem with raspbian stretch and avahi.
I used dhcp binding of my router to fix the address 192.168.2.4 to Mac
Few hours later, after the syslog gives the "Withdrawing address record
for 192.168.2.4" the machine gets another ip-adres, 192.168.2.23 from
the dhcp router.
Checking in the router to see why it don't bind I see the router
assigns 192.168.2.23 to Mac address 86:16:f9:3f:11:5f
The first Mac address is right, b8:27:eb belongs to raspberry
The second Mac address starting 86:16:f9 is not known by
Where does the second, incorrect, Mac address came from?
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Avahi-daemon withdraws address record
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