Well, as the post states I have a Ethernet port showing unknown after a reboot. Been running for a few years fine. Tried rebooting and restarting the network manager but I’m a loss here. Hardware is a nuc11 with an i7 and 2.5 gbe nic
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
If you occasionally boot to windows, it's known to leave NICs in an unusable state if you just hibernate/quick power off. You need to boot back to windows and so a "proper" shutdown for it to come good.
Anything about modules failing to load. What distro are you on? I would check and see if you can still boot into the previous kernel version and see if the interface comes back. You should have the previous version available to select in your boot menu.
Okay, so now you need to get the kernel versions, and start looking up the "why". Is this a problem with the specific kernel build you got upgraded to, or was there a config change that messed something up?
If you know the current version works, there's nothing super wrong with staying on it for awhile to avoid the issue, but it's probably best to identify the cause so you don't live in fear of future upgrades.
What are the two version numbers you have now, and which one works?
I had to leave and won’t be back for a couple days. Tried googling was Fedora 41 is on and I just know it’s 6.11. Once I get back I’ll look at grub and update.
You haven't given any info on your environment, but does it show up in the OS? In lspci or nmtui or whatever? Is it listed in /etc/network/interfaces or your distro's equivalent?