I've recently constructed a new build, and for the most part everything is running smoothly, until it isn't. At random times I lose any and all connectivity to every GUI in the environment requiring a full reboot of the system. At first I thought it was a memory issue, until I finally added Tdarr back to my running apps and found that it was still running as it should while the system was unreachable. This is leading me to believe it's actually a NIC/network issue, I've been doing some digging and it seems there is an issue with the Intel ICE driver that my system is currently using. Hoping someone has some helpful info. Diagnostics are attached.

unraidinblood-diagnostics-20260310-0934.zip

NIC link keeps going up and down;

Mar 10 09:30:03 unRaidInBlood kernel: r8169 0000:84:00.0 eth0: Link is Down

Mar 10 09:30:03 unRaidInBlood kernel: br0: port 1(eth0) entered disabled state

Mar 10 09:30:06 unRaidInBlood kernel: r8169 0000:84:00.0 eth0: Link is Up - 2.5Gbps/Full - flow control rx/tx

Mar 10 09:30:06 unRaidInBlood kernel: br0: port 1(eth0) entered blocking state

Mar 10 09:30:06 unRaidInBlood kernel: br0: port 1(eth0) entered forwarding state

Mar 10 09:30:32 unRaidInBlood kernel: r8169 0000:84:00.0 eth0: Link is Down

Mar 10 09:30:32 unRaidInBlood kernel: br0: port 1(eth0) entered disabled state

Mar 10 09:30:36 unRaidInBlood kernel: r8169 0000:84:00.0 eth0: Link is Up - 2.5Gbps/Full - flow control rx/tx

You can start by replacing the cable and/or using a different switch port

I had an issue with network stability so I purchased and installed a new network card. I noticed after the installation that it created a new subnet in the environment and now certain containers (Sonarr, Radarr, Seerr) can't be seen publicly. Nothing changed in my NGINX or CNAME configurations and I can't seem to figure out how to get them seen again. I created a new custom network but that did not resolve the issue. Any help would be appreciated.

Tried cables and switch port. That didn't resolve. I went out and grabbed a $15 NIC and put it in the system and disabled the onboard card. Since then the system seems to be fully stable with no outages or crashes. However, now none of my apps that are public facing, like Seerr, are no longer accessible to the outside world.

I have merged your threads. Please don't create multiple threads for the same problem. It makes it impossible to coordinate responses.

Sorry about that. Diagnostics attached.

unraidinblood-diagnostics-20260311-1114.zip

Issue was the way the router now recognized the system after the new card was installed. Had to reconfigure the port forwarding as the identity changed. All is now good.