APT ordering of reposiitories

[Ralf Mardorf]

On Fri, 1 May 2020 12:37:26 +0100, Bill Purvis wrote:
>apt upgrade iproute2

Try running

  sudo apt update && sudo apt upgrade

>For background information:
>I'm actually running Linux Mint 19.3 here, and the two machines got
>there by different routes - the one with the latest version was an
>upgrade from 18.3 whereas the other was installed from the Mint 19
>image. Both came up as 18.1 and then I ran apt dist-upgrade to get to
>19.3.

Mint isn't an Ubuntu flavour. There are no 18.1, 18.3 or 19.3 releases
available of whatsoever Ubuntu flavour.

iproute2

4.15.0-2ubuntu1 is available by
https://packages.ubuntu.com/bionic/iproute2

4.18.0-1ubuntu2~ubuntu18.04.1 is provided via
https://packages.ubuntu.com/bionic-backports/iproute2

4.18.0-1ubuntu2 is in
https://packages.ubuntu.com/disco/iproute2

4.18.0-1ubuntu2.1 is accessible when using
https://packages.ubuntu.com/disco-updates/iproute2

4.18.0-1ubuntu2~ubuntu18 isn't provided by any repository at all, see
https://packages.ubuntu.com/

I don't know what third party repositories you are using, neither do I
know anything regarding Mint releases.

Maybe you just forgot to sync the package index files, maybe something
else is fishy.