It will only appear when new upgrades are available.
I'm not on the machine that had these issues at the moment, but I figured out a workaround.
First, locate the python files that are used by apt-offline, if memory services I think it was /usr/lib/python2.7/distribution-files/apt_offline_core/ or something like that.
"Old Stable" refers to the previous stable release, once it has been displaced by the new, current "Stable" release.
Your Uni Fi Controller should now be accessible at the computer's configured local or public ip address. (Optional) This step may not be required, depending on the Linux distro you have.
The following is an updated sample of a sources file.
Note, the source line can contain either a suite name or a code name, although we recommend using the suite name (e.g. Warning: When following the instructions below, note that using on a browser will result in a 403 Forbidden page.
- connect (101: Network is unreachable) [IP: 2001:a::100 80] E: Some index files failed to download.
I got this same error as well with the latest version of Ubuntu.
You can also start the GUI tool by Clicking System The author is the creator of nix Craft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting.