Search Domain reverts to "local"

[KatyComputer]

My PVE 6.2-12 installation insists on reverting the search domain back to "local".

The first time or two, I thought I forgot to set the domain, today was the third or forth time I changed it to the correct domain.

How can I fix this? It's causing trouble in PMG where senders expect to find domain.com, instead they find local

 

[Stoiko Ivanov]

my first guess would be that an interface of the PVE is configured to get it's configuration via DHCP - check the journal for messages from dhcpcd

Alternatively maybe you have one of the services which touch the resolv.conf installed and configured (wrongly):
* resolvconf
* network-manager
* systemd-resolved

-> check the logs and the contents of /etc/resolv.conf (usually they give you a hint)

I hope this helps!

 

[KatyComputer]

HPE's iLO creates a virtual interface, my first inclination is to define it as a static IP in /etc/network/interfaces.
Is that the optimal solution?

We are also using ZeroTier, however I believe it comes to life after resolv.conf is built.

 

[KatyComputer]

I conceded defeat and set the domain name in each of the containers - not the end of the world, just a bit of a head scratcher.