25.04.2019 10:37, Olaf Hering пишет:
Thankfully I have this other system to "get online".
I have no problems with running systemd-resolved. DNS resolution works. It is not broken.
One of the snapshots did unconditional start systemd-resolved. As a result dnsmasq can not claim port 53. As a result no name resolution can work. Nothing like that was mentioned in the weekly review mails.
You are not a newbie who is incapable of distinguishing between "no internet" and "systemd-resolved conflicts with dnsmasq". systemd-resolved listens on single address 127.0.0.53. I have no idea what dnsmasq does or why it conflicts with systemd-resolved - you are capable of debugging it yourself.
There is no preset for 'systemd-resolvd', so one would expect that thing to remain disabled after 'zypper dup'. The man page lacks info about how to not run it per default. It is not possible to get rid of it at the rpm level.
It is likely started via D-Bus auto-start. systemctl mask systemd-resolved.service - or - man resolved.conf /DNSStubListener
Are we still in control of the base system?
Is it time to drop dnsmasq, bind and whatever else would offer DNS services?
Thanks. (really...)
Olaf