I fixed /etc/netplan/00-installer-config.yaml, I replaced "enp0s5" with "enp0s4" and I rebooted virtual machine. Issue is fixed, it gets IP address from DHCP server during server boot! So it looks like "subiquity" just created wrong netplan configuration. So basic configuration and it was not done right... :-(
I have found other similar bug report, #1824483, so it looks like this problem is in Ubuntu for long time; that surprises me... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881832 Title: Ubuntu server 20.04 fails to get IP address from DHCP server (no network connectivity) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/1881832/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs