https://launchpad.net/ubuntu/+archivemirrors shows four mirrors in
Lithuania, all "up to date".
Two of them actually are. One (Vilnius University) has a focal-
updates/Packages.gz from 2021-05-04 with libssl-dev version
1.1.1f-1ubuntu2.3, one (LitNET) has a focal-updates/Packages.gz from
On a closer look it may just be a mirror inconsistency.
There's no Phased-Update-Percentage field in
/var/lib/apt/lists/lt.archive.ubuntu.com_ubuntu_dists_focal-
updates_main_binary-amd64_Packages for the libssl-dev entry, and the
only available version is 1.1.1f-1ubuntu2.4.
** Changed in: apt
