Public bug reported: Configure internet connectivity without IPv6, e.g. via DHCP on a router that supports only IPv4. The active interface should have only a link- local IPv6 address. (Link-local addresses are not routable.)
Run apt update. You may see output like the following: Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease Ign:2 http://ddebs.ubuntu.com bionic InRelease Ign:3 http://ddebs.ubuntu.com bionic-updates InRelease Ign:4 http://ddebs.ubuntu.com bionic-proposed InRelease Get:5 http://ddebs.ubuntu.com bionic Release [34.7 kB] Hit:6 http://ddebs.ubuntu.com bionic-updates Release Get:8 http://ddebs.ubuntu.com bionic-proposed Release [34.7 kB] Get:9 http://ddebs.ubuntu.com bionic Release.gpg [819 B] Get:10 http://ddebs.ubuntu.com bionic-proposed Release.gpg [819 B] Get:11 http://ddebs.ubuntu.com bionic/main amd64 Packages [528 kB] Get:12 http://ddebs.ubuntu.com bionic/main i386 Packages [525 kB] Get:13 http://ddebs.ubuntu.com bionic/universe amd64 Packages [4,372 kB] 0% [Connecting to au.archive.ubuntu.com (2001:388:30bc:cafe::beef)] [13 Package^C Here, apt has correctly used IPv4 for ddebs and security, but continues to try IPv6 for au.archive, despite having no valid IPv6 address from which to reach the internet. apt should be more clever about this, and only attempt to use a protocol if there is a non-zero chance of success. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: apt 1.6~beta1 ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7 Uname: Linux 4.15.0-12-generic x86_64 ApportVersion: 2.20.9-0ubuntu1 Architecture: amd64 CurrentDesktop: KDE Date: Tue Mar 27 14:52:03 2018 InstallationDate: Installed on 2018-03-12 (15 days ago) InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180310) SourcePackage: apt UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: apt (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759118 Title: apt attempts to connect to IPv6 addresses even when there is no IPv6 route To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1759118/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
