(22.1.6) (VM) Unraid becoming unreachable & taking down network.

[bokujutsu]

  So I've been trying to figure this out for a couple weeks but as a networking newbie I'm completely lost and feel like I haven't made any progress.

  I purchased two 2.5gb NICs with the intent of upgrading the connection between my pc, my server, and modem from gigabit to 2.5gb. The first NIC is a single port intel 225v rev03, and the second NIC is a quad port realtek 8125b. Unraid is using the intel 225 and I'm passing through the realtek NIC to OPNsense which is running in a VM within unraid.

  After managing to get OPNsense updated and install the realtek plugin I set the first port as WAN and 2nd as LAN. Everything worked fine but I read that I needed to setup a bridge to get the other ports working how I wanted so I followed the guide in the OPNsense documentation on the website and everything seemed to be working.. until I tried actually using my unraid server. I can get to the web ui and update things, switch pages, all dockers work fine, I can even browse my shares in the windows file browser like normal and transfer at full 2.5gb speed between the server and my PC, but within a few minutes the server will become unreachable.

  Thinking the intel 225 might be an issue and not having time to mess with unraid anymore I reverted everything back to the old setup of using the ac68u but I kept using the 225 to try to rule it out as an issue and after a week of use I hadn't had a single issue. So once I had time and thinking I may have messed something up on the install I did a fresh install of OPNsense and reconfigured the bridge and tunables only to have the same issue. This time I renabled the on board 1gb NIC and swapped to it to check again if the 225 could be an issue and I still had problems with unraid and its dockers becoming unreachable, so I reverted back to the 225. I found that if I unplug and replug the cable for the server it comes online again but does the same thing. I even tried setting a static IP in unraid and it still has the same issue.

 Now keep in mind while the unraid web ui and dockers are unreachable the VM still works fine and everything else on my network still had internet, so it doesn't seem to be an issue of my server being unstable and crashing.

  I made a post on reddit seeking help and I got the suggestion that something might be wrong with the bridge, so having no idea how to diagnose what could be wrong with the bridge or how to fix it I decided to try setting up OPNsense the proper way with a switch on LAN. I reverted the tunables for the bridge and deleted the bridge, then I took my asus ac68u which has been working flawlessly in AP mode with OPNsense and used that as a switch. It limits me to gigabit again but I wanted to try anyway just to get a sense of what works and what doesn't. Plugged my PC and unraid server into the ac68u and... my network went down. Odd but not a big deal, I just reloaded services and.. down again pretty quickly. I did this a few times and even rebooted the VM, still the same issue until.. I unplugged the unraid server.

  Everything has been working fine in this configuration since unplugging the unraid server but I'm not sure where to go from here. I'd really like to make this work but I've been considering giving up on the 2.5gb upgrade and just swapping back to the ac68u. Any help with this would be greatly appreciated!!

[bokujutsu]

I've narrowed it down to an issue with one of my dockers, specifically binhex-delugevpn.

Any ideas why a bittorrent client + VPN would be causing these issues??

[bokujutsu]

Switching from OpenVPN to WireGuard seems to have fixed the issue.

[defaultuserfoo]

Never buy Realtek network cards.  Use Intel cards; Broadcom seems ok, too.