Thanks, Nick! I've installed version 1:9.6p1-3ubuntu13.6 and confirm that it fixed the issue.
Here's how I verified: 1. Install new version 2. Check what's listening on port 22 via ss command: $ sudo ss -tlnp | grep :22 LISTEN 0 8192 0.0.0.0:22 0.0.0.0:* users:(("systemd",pid=1,fd=68)) LISTEN 0 8192 [::]:22 [::]:* users:(("systemd",pid=1,fd=69)) 3. Tried to connect on IPv4 interface to double check and it worked -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2080216 Title: sshd cannot bind to IPv4 interfaces To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2080216/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs