Spent much of the day working towards this. I'm still failing. 😦
Proxmox is up on VLAN5. I can get at the UI over the network so I know the trunk VLAN is letting that stuff through but I can't figure out how to get at OPNSense. No traffic seems to pass the bridge but the docs say that bit should just work.
@pieceofthepie screenshot your /etc/network/interfaces file and the hardware tab of your OPNSense VM, please. Even if I can't tell from that what's wrong, it'll help eliminate a lot of possibilities.
@uberduck I think I probably need to remove the enp1s0 interface as thats now passed through as a raw PCI device to the VM but I don't think that would affect things.
@pieceofthepie It won't affect things, but since you're passing enp1s0 in to OPNSense you'll need to set up all your vlans directly there.
You might want to check the docs (or /var/log/syslog) for whatever device enp2s0 is and make sure it can actually handle 4094 vlans. Many cheaper network cards (looking at you, Broadcom) only support 128 separate vlans, so you may need to specify exactly which vlans you're using. The error message looks like "no space left on device."
@pieceofthepie I've heard more about running a firewall on Proxmox. What's the "destination" of the trunking with eth0-eth5? The legacy part of your network?
@johnefrancis Yeah. That's an omada managed switch so the trunk also goes off to the AP. The various other ports go to servers, IOT or clients and so there are 3 other vlans out of it.
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