Martin: I still wonder what the point of having resolvconf is, if it’s
only ever supposed to be used to manage 127.0.0.53, and every other use
of resolvconf will lead to this bug resurfacing.  I still propose that
systemd-resolved should read from /run/resolvconf/resolv.conf without
adding 127.0.0.53 to it, and /etc/resolv.conf should be a symlink to
/lib/systemd/resolv.conf rather than /run/resolvconf/resolv.conf.


Willem: If systemd-resolved isn’t suitable to be the only nameserver in 
resolv.conf, then it isn’t suitable to be in resolv.conf at all.  I would 
rather either see these bugs worked out during the zesty cycle, or have 
systemd-resolved removed entirely, than leave the system in a half-broken state 
where the bugs in systemd-resolved get (probabilistically?) masked by the 
presence of other nameservers in resolv.conf.

In its current state, systemd-resolved is thoroughly broken on account
of (at least) bug 1647031.  I had to downgrade network-manager because
switching to a resolver that doesn’t follow CNAME records breaks way too
much of the internet.  This might not have been noticed with other
nameservers in resolv.conf.  (Although now that it has, I’m getting
increasingly concerned by the switch not having been reverted yet…)

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https://bugs.launchpad.net/bugs/1624320

Title:
  systemd-resolved appends 127.0.0.53 to resolv.conf alongside existing
  entries

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