I have the same issue on a clean install of 24.04.1. >From ubuntu-24.04-live-server-amd64.iso I chose "Ubuntu Server (minimized)" and "Install OpenSSH server".
$ sudo apt update && sudo apt upgrade -y && shutdown -r now ... $ lsb_release -d No LSB modules are available Description: Ubuntu 24.04.1 LTS $ sudo apt install net-tools iputils-ping ... $ netstat -an | grep '^tcp.*LISTEN' tcp 0 0 127.0.0.54:53 0.0.0.0:* LISTEN tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN tcp6 0 0 :::22 :::* LISTEN $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=58 time=3.62ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=58 time=3.09ms 64 bytes from 8.8.8.8: icmp_seq=3 ttl=58 time=3.36ms ^C $ sysctl net.ipv6.bindv6only net.ipv6.bindv6only = 0 (This is inside VirtualBox. Pinging the ubuntu IP4 address from the Windows also host works.) Creating /etc/systemd/system/ssh.socket.d/bindipv6only-both.conf as suggested above does not fix the issue. $ sudo systemctl disable --now ssh.socket $ sudo systemctl daemon-reload $ sudo systemctl enable --now ssh.service does fix the issue. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/2080216 Title: sshd cannot bind to IPv4 interfaces Status in openssh package in Ubuntu: Confirmed Bug description: After upgrading from 22.04 to 24.04 I noticed that my sshd only listening on IPv6 interface (::), while previously it was listening both IPv4 (0.0.0.0) and IPv6 (::). I tried to explicitly specify ListenAddress 0.0.0.0 (assuming it would bind to IPv4 only) but after restart sshd was still listening on IPv6 only. This problem affects other packages as well, for example, openvpn. Rebuilding applications from sources seems to fix the issue. Setting net.ipv6.bindv6only=0 also helps, but that's not a solution. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: openssh-server 1:9.6p1-3ubuntu13.5 ProcVersionSignature: Ubuntu 6.8.0-41.41-generic 6.8.12 Uname: Linux 6.8.0-41-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 CasperMD5CheckResult: unknown Date: Tue Sep 10 16:45:54 2024 ProcEnviron: LANG=C.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=screen.xterm-256color SourcePackage: openssh UpgradeStatus: Upgraded to noble on 2024-09-10 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2080216/+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
