Running into a weird issue with an Unraid box - and I've exhausted my Google/forum searching capabilities, so looking to the forum for additional support.

Issue: The Unraid box in question (192.168.20.240) cannot ping the gateway IP (192.168.20.1), but it can ping all other devices on the same subnet. This is a flat /24 subnet, and you can connect to the Unraid box via its IP when you are on a device connected to the same subnet (oddly, I cannot connect to it when VPN'd to this network - assuming a routing issue related to not being able to ping the gateway). This network is managed by a Unifi Dream Machine Pro (UDMP) , and it does not even show that the Unraid box is physically connected (it's greyed out).

Troubleshooting so far: I've changed the IP address of the Unraid box to 192.168.20.250. This caused the UDMP to recognize it was physically connected for a short period, and to update the IP address on that physical connection, but it then returned to the same greyed-out status. The result of the IP change was the same as the original situation - you cannot ping the gateway, but you can connect to it and manage it from a device on the same network. The UDMP has also been rebooted to clear any ARP cache-related issues, but nothing changed there.

I've attached a log bundle that was pulled during all of this testing a few weeks back for review and additional eyes. Any suggestions would be greatly appreciated!

arsbackup-diagnostics-20251016-1147.zip

Edited October 27, 2025Oct 27 by FarSide792

Don't see anything obvious, but to rule out a config issue, try booting with a different flash drive using a stock install, no key needed, and retest, that should confirm if it's a config problem or an external issue.

Finally got around to testing as suggested above @JorgeB . Interestingly enough, networking works as expected. I set up the new flash drive with 192.168.20.250, and I can connect to it from anywhere, and the Unraid box can ping the gateway.

I grabbed a support bundle in case anything was comparable to the original one (attached).

That said, what's the best way to migrate all previous shares/settings/etc to this new install? Thanks in advance!

arsbackuptest-diagnostics-20251028-2002.zip

If it's a config problem you can try redoing the flash drive, backup the current one first and then recreate it using the USB tool and just restore the bare minimum, like the key, super.dat and the pools folder for the assignments, also copy the docker user templates folder (\config\plugins\dockerMan\templates-user), if all works you can then reconfigure the server or try restoring a few config files at a time from the backup to see if you can find the culprit.

As a quick update to this - I finally got around to testing further. In an effort to ensure I had a backup of the original flash drive, I booted the Unraid box from it, and everything worked as it should. I rebooted a couple of times, and everything continued to work. Not really sure what caused things to work again, but I'm going to leave it alone for now, haha.

Thanks for the suggestions, @JorgeB - I'll refer back to this thread and update it if the problem returns.