I verified this for noble. 1 deploy fresh noble instance without NIC ( in this case ssh.socket is enabled only ) 2 add line for vsock cat > /etc/systemd/system/ssh.socket.d/vsock.conf << EOF [Socket] ListenStream=vsock::22 EOF 3 systemctl daemon-reload; systemctl restart ssh.socket 4 try to connect it with hvc ssh 5. hang 6. add NIC and setup network 7. added noble-proposed pkg and run hvc ssh again
before upgrading, it hung. after upgrading, I can connect it ( below dpkg is from hvc connected terminal ) ubuntu@noble:~$ dpkg -l | grep openssh ii openssh-client 1:9.6p1-3ubuntu13.14 amd64 secure shell (SSH) client, for secure access to remote machines ii openssh-server 1:9.6p1-3ubuntu13.14 amd64 secure shell (SSH) server, for secure access from remote machines ii openssh-sftp-server 1:9.6p1-3ubuntu13.14 amd64 secure shell (SSH) sftp server module, for SFTP access from remote machines in terminal PS C:\Users\one> hvc ssh ubuntu@noble (hang, before upgrading) PS C:\Users\one> hvc ssh ubuntu@noble ( passed, after upgrading) The authenticity of host 'hyper-v/noble (<no hostip for proxy command>)' can't be established. ED25519 key fingerprint is SHA256:rPlwMbuJcvlLAjvhVpFggJRPlsEjL3x8UptHzKOsPDc. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added 'hyper-v/noble' (ED25519) to the list of known hosts. ubuntu@hyper-v/noble's password: Welcome to Ubuntu 24.04.2 LTS (GNU/Linux 6.8.0-53-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/pro System information as of Mon Sep 1 05:27:42 AM UTC 2025 System load: 0.01 Processes: 221 Usage of /: 5.2% of 123.41GB Users logged in: 1 Memory usage: 47% IPv4 address for eth0: 172.17.127.46 Swap usage: 0% Expanded Security Maintenance for Applications is not enabled. 204 updates can be applied immediately. 119 of these updates are standard security updates. To see these additional updates run: apt list --upgradable Enable ESM Apps to receive additional future security updates. See https://ubuntu.com/esm or run: sudo pro status Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet connection or proxy settings ubuntu@noble:~$ ** Tags removed: verification-needed-noble ** Tags added: verification-done-noble -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2111226 Title: sshd socket activation does not support AF_VSOCK To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2111226/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
