Fresh PVE 9 installation

fynchy

New Member
Sep 12, 2025
2
0
1
I have a beginner question. I just finished a fresh installation of PVE, but I don’t have any network access. During the installation, the system picked up an IP address via DHCP. However, after rebooting and logging in for the first time, the network interface was down.

I confirmed that the interface name in /etc/network/interfaces matches the name shown under ip a. I also tried bringing it up with ip link set eno2 up, but there’s still no network connection (despite the interface being listed as up).

I tested both onboard NICs in case the interface names were switching between them, but neither one is working.

What’s strange is that PVE 8 installed without any issues. This problem only seems to happen with PVE 9. Any suggestions?
 
On second thought, could the issue be that the default bridge isn’t inheriting the physical MAC address from the interface? I’ll check on this tomorrow, but it might explain the network problems. If the DHCP lease for the physical MAC wasn’t released during installation, the node could be trying to reuse that IP with a newly generated MAC, causing the conflict.