> It was no "assumption", but an "observation". no, you are assuming that systemd-resolved is the authoritative nameserver providing the $(hostname) addresses, which is wrong. systemd-resolved is a stub nameserver that does no authoritative resolution itself; it gets its answers from other nameservers.
> Name: xxx # my "$(hostname)" why are you obfuscating your hostname? It could be relevant, for example if you're choosing to use the 'local' domain. Let's try this instead; do this: $ sudo systemctl --runtime edit systemd-resolved in the editor that opens, put this: [Service] Environment=SYSTEMD_LOG_LEVEL=debug then, save it and exit the editor. Then do: $ sudo systemctl restart systemd-resolved and now lookup your name: $ nslookup $(hostname) and then do this and paste/attach the results: $ journalctl -b -u systemd-resolved --no-pager -- 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/1853669 Title: systemd resolves own hostname to link local ipv6 address Status in systemd package in Ubuntu: Incomplete Bug description: I've got an ethernet-device that only has a configured ipv4 address, and some auto-generated link-local (aka "scope link") ipv6 address. Any tool doing a DNS query (and /lib/systemd/systemd-resolved is the DNS-server listening on 127.0.0.53) for this host's hostname gets back two addresses: the correct ipv4 address, and a broken ipv6 address. Unlike on ipv4, it is possible for the same ipv6-address to be assigned to multiple devices, and therefore the address is only valid in the context of the eth-device. Now, if "ifconfig" shows "inet6 fe80::4687:fcff:fe9e:4ac7 prefixlen 64 scopeid 0x20<link>" then "fe80::4687:fcff:fe9e:4ac7" is NOT a connectable address, and syscall connect() typically fails with EINVAL. To make it a valid address, it needs to be suffixed with a "%" and the device name, like: fe80::4687:fcff:fe9e:4ac7%enp4s0 Either the resolver can return the link name attached to the address separated with a "%" char, or it needs to ignore link-local inet6 addresses. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1853669/+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