Network issue after installing OMV5 on Armbian

Please help with the following issue which happens while I configure NAS on my renegade libre mini computer.

1. Armbian successfully installs with

Armbian_20.05.2_Renegade_buster_current_5.4.43.img

2. apt-get update and upgrade are passed fine too.

3. After performing 'reboot' everything seems to be OK.

Then I install OMV using:

wget -O - https://github.com/OpenMediaVa…Script/raw/master/install | sudo bash

I tried to do this both via SSH and straightly from the device.

The installation is running as it should until reboot.

After reboot, however, I get no IP via DHCP of my router.

Actually, this is the issue.

I am able to configure network manually and then configure OMV and NAS successfully.

A few screenshots are attached to this post.

Anyway it is no good at all since:

1. After each reboot I should repeat manual network configuration

2. I am not able to apt-get update or upgrade anymore or install any new package because URLs are not being resolved. Something's wrong with DNS and I did not find a way to fix this.

Does anybody have any idea what is wrong?

Thanks a lot

I know that the script switches from network-manager. The problem is not "different" ip address the board get, but NO ip address it acquires.

My manual configuration consists of two commands:

ip link set dev eth0 up

and then

dhclient - to acquire ip through DHCP

Actually I can set static address as well.

I say again: this allows to configure OMV and NAS, but it is not acceptable due to the reasons mentioned in my first post.

NB

I did not understand the statements about too many PMs. Pls clarify if it is relevant