This happened again today.
Unifi network was reporting it as the right IP, but it wouldn’t resolve.
Running a ping to the HA address then activating the port with the NMCLI command and it popped right back up again.
Checking my email and I see that the Unifi Switch that my HA connects to updated this morning.
Even after a reboot of HA it didn’t come back until I ran the NMCLI commands
Hi, same problem for me. RPI5 with HassOS 12 installed on NVME drive. First start failed as yours.
Added a bunch of NTP servers to /etc/systemd/timesyncd.conf with vi (time.goole.com and time1.google.com). Restarted and everything worked fine.
I had the exactly same issue with an RPI3 with HassOS installed on an SD card at the first start.
I think that in my case my ISP or my router have no access to default HassOS NTP server cloudfare.