Hi @kmattoon 

Thanks for posting in our business forum.

First, when upgrading the firmware, make sure you read the release note which has written the prerequisite firmware. You gotta upgrade to a version before you move on to the latest firmware.

Upgrade this one by one. Skipping too many versions directly to the latest one would fail most of the time because several recent releases require the HTTPS-enabled and prerequisite versions.

Please read the release note.

Second, if you did not enable IPv6, then they would not display the v6 address or be accessible via v6 as this has been disabled.

When you enable v6 on your adapter settings, it will self-assign an IP address but this has nothing to do with the router if you are not enabling the v6 on the router.

FE80 is a link-local address. You can look this up on Google. Pretty straightforward and easy to understand.

Third, if they are wired devices not getting them, I expect this to be a problem with the connections. How do you wire them? They are not getting any sort of IPs at all? What is the display of IP in the adapter for v4 connections? The IP readings.

For the wireless, I assume it could be an issue with the AP and signal strength. Since you did not mention that this happens to the wireless devices, I will not go deep in the troubleshooting for the wireless.

I would appreciate it if you could give any information like this which would be helpful for my troubleshooting.

The top priority now is also to upgrade the firmware. Before the firmware is on the latest, I don't wish to troubleshoot it further as it could be a bug fixed in the releases.