Hi everyone. I just needed a sanity check before embarking on doing a New Config reset on my current server.

I have been adding some network interfaces to my Unraid system over the years, and I have recently settled on having both the motherboard's inbuilt NIC and an Intel X550 SFP NIC in it. I had a USB-C to 2.5Gbe adapter before, and that worked well, but I have since retired it in favour of the Intel NIC.

Somehow, my network settings have gone all wonky and it thinks the USB-C (which isn't there anymore) is still eth0. That has led to many frustrating issues such as the network not reconnecting after every reboot. I have tried delete the network config file a number of times, but to no avail. Right now, I may have to do the New Config to just get things straightened out.

I have a bunch of ZFS pools and a simple Unraid array in the mix: 2 x 2TB for my Time Machine Backup (Unraid array), a 3 x 4TB for some large video projects I used to work on (ZFS pool), and a 4 x 1TB for general file storage (another ZFS pool).

I know the New Config will basically clear out everything, but I also do remember that I should be able to preserve my data if I used reassign all the drives back in the right place. I do have ZFS master installed, and it has helped me when I had to rebuild the 1TB disk pool when a drive went really bad.

Would anyone be able to help advise if that is the case and if there is anything I should be looking out for?

Thanks in advance!

All New Config does is reset your drive assignments. No reason to think it would have any effect on your other problems.

Attach Diagnostics ZIP to your NEXT post in this thread.

If you want to just reset the network setting, delete/rename /config/network.cfg and network-rules.cfg on the flash drive and reboot to go back to default DHCP settings.

5 hours ago, JorgeB said:

If you want to just reset the network setting, delete/rename /config/network.cfg and network-rules.cfg on the flash drive and reboot to go back to default DHCP settings.

Hmmmm. I've deleted the network.cfg, but not the network-rules.cfg. I'll give that a shot.

One of the main issues I've observed after deleting network.cfg is that eth0 (which is the default network adapter as recognised by Unraid) still seems to be mapped to the non-existent USB adapter. So despite deleting network.cfg, I keep seeing three adapters in the network settings whenever the server reboots.

Then when the server reboots, it defaults to IPV4 on eth1 (built-in NIC). But when I turned on IPV6, it just lost all network connections. I believe I did a bit of poking around in the command line and I discovered that all the network tables were gone. That affected Tailscale and my Docker containers, which meant I lost my remote connection to the server and I had to go reset it in person again.

12 hours ago, trurl said:

All New Config does is reset your drive assignments. No reason to think it would have any effect on your other problems.

Attach Diagnostics ZIP to your NEXT post in this thread.

As requested, here's the diagnostics ZIP file.

unraid-diagnostics-20260329-2309.zip

There's currently no eth0; deleting network-rules.cfg and rebooting should correct that.

Just a quick update! Managed to login and deleted the cfg files. That fixed it!

Thank you all for your help!