> the vast, VAST majority of the time you see this message it is actually not a NXDOMAIN error.
I don't have any extensive data as you seem to have but _for me at home_ (= office now!) and without zero captive portal involved, adding this trailing dot reduces the NXDOMAIN frequency from one message every 5 minutes to a few messages _per day_ (NM's default interval is 300 seconds) The "journalctl --boot -p notice" total also becomes about twice smaller. I filed this bug for a reason. > the NXDOMAIN returned by the upstream nameserver is the *correct* response - > that hostname connectivity-check.ubuntu.com.your_domain really, actually > doesn't exist. Yes of course, hence this one character fix which IMHO also removes one large "distraction" from the main, captive portal issue! > if you see this NXDOMAIN "error" [outside a captive portal] it is almost > always just a normal lookup of a domain that doesn't exist, ... which is for sure very rare on my (admittedly headless) system. Not sure why querying inexistent domains would be frequent on others' systems? > and the error message is simply wrong It says "mitigating _potential_..." so it's not strictly speaking wrong. Agreed it can be misleading but summarizing this fairly complex issue in just one line is quite a challenge. > This is due to a Ubuntu-only patch to systemd Care to share the "best" link(s) about this? I mean links to best bugs and/or relevant source code. An internet search returns too many hits! BTW a good and authoritative bug number in the error message would probably not hurt either, see why above. > network-manager could work around this problematic Ubuntu-only systemd patch, With an Ubuntu-only network-manager patch maybe? Sorry couldn't resist :-) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880258 Title: Add trailing dot to make connectivity-check.ubuntu.com. absolute and reduce NXDOMAIN warning noise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1880258/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
