[SOLVED] "identical" node cannot connect to any network


New Member
Aug 7, 2023
Hi forum.

I am building a small cluster based mainly of HP ProDesk's running Proxmox.

The two nodes i have are very similar, but the newest (With the issues) has an Intel NIC instead of Realtek which i am fan of.

I am running the nodes through a Unifi Switch untagged. Therefore i have configured all VM's to have a tag, as well as the management interface. It works on Node 1 but NO connectivity through Node 2 (The intel).

Since the first is working, i basically copied the exact setup with a new IP. The IP is not already assigned, and there is nothing in DHCP or other things that would indicate why it cannot connect.

It has been working once, but not on the correct network so i changed it. Therefore i would assume that the NIC works as intended.
This is my network configuration:

auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet manual
        bridge-ports eno1
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr0.10
iface vmbr0.10 inet static

Here is some further info:


00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-LM (rev 10)

Other than that, i have tried:
  • Ping (Not OK)
  • Nnmap (Not OK)
  • dig for DNS (Not OK)
  • Checking the ARP table in my router (The MAC is missing) (Not OK)
  • Reconfiguring with/without VLANS through Unifi
  • /etc/resolv.conf (OK)
  • ip route | grep default (OK)
Any ideas as to why this happens and what i might try?

Thanks in advance!
Last edited:
Solved! bridge-vids was set to 4096 instead of 4094 and now it works. I am not sure why, but leaving for anyone else.


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