I verified part 3 of the test case, that (an appropriately configured) unattended-upgrades upgrades an arm64 with libc6-lse without complaints:
new_user@ip-172-31-25-59:~/bench$ sudo unattended-upgrade -v Could not figure out development release: Distribution data outdated. Please check for an update for distro-info-data. See /usr/share/doc/distro-info-data/README.Debian for details. Starting unattended upgrades script Allowed origins are: o=Ubuntu,a=focal, o=Ubuntu,a=focal-security, o=UbuntuESMApps,a=focal-apps-security, o=UbuntuESM,a=focal-infra-security, o=Ubuntu,a=focal-updates, o=Ubuntu,a=focal-proposed, o=LP-PPA-mwhudson-devirt,a=focal Initial blacklist: Initial whitelist (not strict): Packages that will be upgraded: libc-dev-bin libc6 libc6-dev libc6-lse Writing dpkg log to /var/log/unattended-upgrades/unattended-upgrades-dpkg.log Preconfiguring packages ... Preconfiguring packages ... (Reading database ... 169897 files and directories currently installed.) Preparing to unpack .../libc6-lse_2.31-0ubuntu9.9_arm64.deb ... Unpacking libc6-lse:arm64 (2.31-0ubuntu9.9) over (2.31-0ubuntu9.7) ... Preparing to unpack .../libc6-dev_2.31-0ubuntu9.9_arm64.deb ... Unpacking libc6-dev:arm64 (2.31-0ubuntu9.9) over (2.31-0ubuntu9.7) ... Preparing to unpack .../libc-dev-bin_2.31-0ubuntu9.9_arm64.deb ... Unpacking libc-dev-bin (2.31-0ubuntu9.9) over (2.31-0ubuntu9.7) ... Preparing to unpack .../libc6_2.31-0ubuntu9.9_arm64.deb ... Unpacking libc6:arm64 (2.31-0ubuntu9.9) over (2.31-0ubuntu9.7) ... Setting up libc6:arm64 (2.31-0ubuntu9.9) ... Setting up libc6-lse:arm64 (2.31-0ubuntu9.9) ... Setting up libc-dev-bin (2.31-0ubuntu9.9) ... Setting up libc6-dev:arm64 (2.31-0ubuntu9.9) ... Processing triggers for man-db (2.9.1-1) ... Processing triggers for libc-bin (2.31-0ubuntu9.9) ... All upgrades installed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1951033 Title: 20.04 SRU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1951033/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs