Another vote to bump up the priority on this. Just lost 2 days to this bug, mostly because the behavior is so stupidly borked that I never suspected that Ubuntu would be the cause. Can you imagine how stupid it is that the only machines on the network affected are the Ubuntu Desktops and Ubuntu Servers. Can you imagine how embarrassing it that even Windows machines follow the standards better than a Linux machine.
And the absolutely mind-boggling thing is that this is affecting every release from 16.04 to 19.04 and still it is not considered important enough to fix. It is absolutely ridiculous that it would be considered more important to keep behavior that supports a few edge cases of software that wants to do their own DNS resolution in spite of the fact that it breaks the world-wide standards of DNS resolution and ignore DHCP-provided DNS addresses. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1624320 Title: systemd-resolved appends 127.0.0.53 to resolv.conf alongside existing entries Status in systemd package in Ubuntu: Confirmed Bug description: systemd-resolved, or more precisely the hook script /lib/systemd/system/systemd-resolved.service.d/resolvconf.conf, causes resolvconf to add 127.0.0.53 to the set of nameservers in /etc/resolv.conf alongside the other nameservers. That makes no sense because systemd-resolved sets up 127.0.0.53 as a proxy for those other nameservers. The effect is similar to bug 1624071 but for applications doing their own DNS lookups. It breaks any DNSSEC validation that systemd-resolved tries to do; applications will failover to the other nameservers, bypassing validation failures. And it makes failing queries take twice as long. /etc/resolv.conf should have only 127.0.0.53 when systemd-resolved is active. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1624320/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
