Happens as well on Ubuntu 20.04, very annoying because it works fine if those domains are manually added to /run/systemd/resolve/stub- resolv.conf file so there's not real limit since glibc is not the issue anymore.
This of course gets overwritten on any network change, and in case of VPN connections this happens a lot. -- 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/1945288 Title: Search domains missing from resolv.conf stub Status in systemd package in Ubuntu: Confirmed Bug description: System is Mint 20.2, with the relevant packages taken from Ubuntu Focal. This is the output of `systemd-resolv --status vpn0`: Link 7 (vpn0) Current Scopes: DNS DefaultRoute setting: yes LLMNR setting: yes MulticastDNS setting: no DNSOverTLS setting: no DNSSEC setting: no DNSSEC supported: no Current DNS Server: 10.0.0.53 DNS Servers: 10.0.0.53 DNS Domain: example.com example.com.rpz privatelink.blob.core.windows.net node.prd.lan.example.com node.stg.lan.example.com node.dev.lan.example.com However that last domain is missing from `/etc/resolv.conf` (symlink to `/run/systemd/resolve/stub-resolv.conf`), instead there is a line # Too many search domains configured, remaining ones ignored. According to resolv.conf(5) since glibc 2.26 the number of search domains should be unlimited, and installed is 2.31-0ubuntu9.3 VPN is PaloAlto GlobalProtect through the OpenConnect plugin on NetworkManager. Exact same setup and behaviour for a colleague using Pop!_OS 20.04 -- systemd: Installed: 245.4-4ubuntu3.13 Candidate: 245.4-4ubuntu3.13 Version table: *** 245.4-4ubuntu3.13 500 500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 245.4-4ubuntu3.11 500 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 245.4-4ubuntu3 500 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages libc-bin: Installed: 2.31-0ubuntu9.3 Candidate: 2.31-0ubuntu9.3 Version table: *** 2.31-0ubuntu9.3 100 100 /var/lib/dpkg/status 2.31-0ubuntu9.2 500 500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 2.31-0ubuntu9 500 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1945288/+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
