Netbird and read-only /etc

We are running netbird on an embedded system with systemd and a read-only mounted root file system (in other words /etc is not writable). /etc/resolv.conf is a symlink to /run/systemd/resolve/resolv.conf.

Therefor netbird fails to create a backup of resolv.conf in /etc and name resolution for the VPN does not work.

Are there any configuration options to allow netbird to function properly in this setup?

Please advise.