On 5/27/25 7:40 PM, Titus Newswanger wrote:

On 5/26/25 14:20, accipiter wrote:
Attempting to delete/remove the connection entry with the wrong data
simply caused the defective connection entry to be replicated, only now with yet another UUID.  It is this erroneous connection entry that appears connected to the eth0 device.
I had a similar problem just yesterday. Could not remember what all I did to it in the past year, I do know I had majorly modified the networking. I completely redid the network configs but still had the ip address going back to the previous setup. Gave up on it and wiped the hard drive and reinstalled Debian 12. Now everything works great.


It may come to that. Hate to do it, there are some old bits that I've been using to interact with some specialized hardware - it's the whole reason why I keep this 14-yo machine. I can *probably* reconstruct but there's a finite probability that I'll miss something that I didn't backup. Without a network connection it all gets harder.

It seems likely that there's some detritus from one or more prior versions of Debian that's screwing things up, but I'm not knowledgeable enough to figure it out.

This morning's reboot - networking reports via ifconfig and nmcli look better (right IP#, gateway, /etc/resolv.conf set properly once I use nmcli to force the device to connect, but can't ping the gateway nor does pinging this system from other host get any reply.

Thanks to everyone for your suggestions!! I'll make a few more attempts before the total rebuild but I'm not optimistic.

  -F

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