[Bug 1982553] Re: Search domains not working after upgrading to Ubuntu 22.04

[Rémi Floriot]

Hello,

Yes please find the outputs below:

- Ubuntu 22.04:

$ resolvectl
Global
       Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: foreign
[...]
Link 3 (enx106530d43428)
    Current Scopes: DNS
         Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Current DNS Server: 8.8.8.8
       DNS Servers: 8.8.8.8
        DNS Domain: domain.com


- Ubuntu 20.04 (on another machine...):

$ resolvectl
resolvectl: command not found

$ systemd-resolve --status
Global
[...]          
Link 2 (enp0s31f6)
      Current Scopes: DNS
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
         DNS Servers: 8.8.8.8
          DNS Domain: ~.
                      domain.com

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https://bugs.launchpad.net/bugs/1982553

Title:
  Search domains not working after upgrading to Ubuntu 22.04

Status in netplan.io package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  New

Bug description:
  Hello,

  After upgrading to Ubuntu 22.04, I noticed that search domains are not
  working anymore.

  Either I configure search domains via netplan or with graphical "nm-
  connection-editor", this is not taken into account when resolving
  domain names.

  For instance if I configure "domain.com" in search domains list,
  looking for "host" does not look for "host.domain.com". This is
  confirmed with a wireshark capture. Consequently if I want to connect
  with SSH to host.domain.com, I have to type the entire url.

  In Ubuntu 20.04 this works correctly. With a packet capture I can see
  one domain lookup for each of my search domains configured.

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