Comment 0 for bug 1788081

I have a connection profile which is supposed to allow my computers to talk to eachother over an ad-hoc eithernet connection. For me, this is mostly useful for when I need to transfer large files over from one computer to another (the only network I have is WiFi, and it's painfully slow). So, If I need to transfer files from machine A to machine B, I just use an eithernet cable. Easy-peasy.

However, after upgrading one of my machines from Ubuntu 16.04 to 18.04, I find that said machine can no longer create such a network. If I try to active the profile graphically using nm-applet, it fails without displaying any error messages. However, If I try to activate it from the command line with "nmcli con up id Wired\ Connection\ 2", it fails with the following message:

Error: Connection activation failed: IP configuration could not be reserved (no available address, timeout, etc.)

While typing this bug report, I ran the "ubuntu-bug network-manager" command, and will post the results below. If there's anything else I can do (I can't read/write code very well, but I can test code, and get any additional information, so long as I'm given clear instructions on how to do so), please let me know.