Extra command results as requested (this is indeed on WSL2): pjn:~$ host ubuntu.com ubuntu.com has address 91.189.88.180 ubuntu.com has address 91.189.88.181 ubuntu.com has address 185.125.190.20 ubuntu.com has address 185.125.190.29 ubuntu.com has address 185.125.190.21 ns1.canonical.com has address 91.189.94.173 ns2.canonical.com has address 91.189.95.3 ns3.canonical.com has address 91.189.91.139 ubuntu.com has IPv6 address 2001:67c:1360:8001::2c ubuntu.com has IPv6 address 2001:67c:1360:8001::2b ns1.canonical.com has address 91.189.94.173 ns2.canonical.com has address 91.189.95.3 ns3.canonical.com has address 91.189.91.139 ubuntu.com mail is handled by 10 mx.canonical.com. ns1.canonical.com has address 91.189.94.173 ns2.canonical.com has address 91.189.95.3 ns3.canonical.com has address 91.189.91.139
pjn:~$ host ubuntu.com 1.1.1.1 Using domain server: Name: 1.1.1.1 Address: 1.1.1.1#53 Aliases: ubuntu.com has address 185.125.190.21 ubuntu.com has address 185.125.190.29 ubuntu.com has address 185.125.190.20 ubuntu.com has address 91.189.88.181 ubuntu.com has address 91.189.88.180 ubuntu.com has IPv6 address 2001:67c:1360:8001::2b ubuntu.com has IPv6 address 2001:67c:1360:8001::2c ubuntu.com mail is handled by 10 mx.canonical.com. And, the result of trying to connect to a down host: pjn:~$ ping woden.chm.bris.ac.uk PING woden.chm.bris.ac.uk (137.222.47.3) 56(84) bytes of data. ^C --- woden.chm.bris.ac.uk ping statistics --- 7 packets transmitted, 0 received, 100% packet loss, time 6249ms pjn:~$ host woden.chm.bris.ac.uk woden.chm.bris.ac.uk has address 137.222.47.3 irix.bris.ac.uk has address 137.222.8.143 ncs.bris.ac.uk has address 137.222.8.142 ns3.ja.net has address 193.63.106.103 irix.bris.ac.uk has IPv6 address 2001:630:e4:82:137:222:8:143 ncs.bris.ac.uk has IPv6 address 2001:630:e4:82:137:222:8:142 ns3.ja.net has IPv6 address 2001:630:0:46::67 pjn:~$ ssh woden.chm.bris.ac.uk @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: POSSIBLE DNS SPOOFING DETECTED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ The RSA host key for woden.chm.bris.ac.uk has changed, and the key for the corresponding IP address 137.222.8.143 is unchanged. This could either mean that DNS SPOOFING is happening or the IP address for the host and its host key have changed at the same time. Offending key for IP in /home/pjn/.ssh/known_hosts:1982 remove with: ssh-keygen -f "/home/pjn/.ssh/known_hosts" -R "137.222.8.143" @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key sent by the remote host is SHA256:uWlUoRB1FzEfprXfQ/hmU9B70YlhGoOBq+VeVYluclI. Please contact your system administrator. Add correct host key in /home/pjn/.ssh/known_hosts to get rid of this message. Offending RSA key in /home/pjn/.ssh/known_hosts:2029 remove with: ssh-keygen -f "/home/pjn/.ssh/known_hosts" -R "woden.chm.bris.ac.uk" RSA host key for woden.chm.bris.ac.uk has changed and you have requested strict checking. Host key verification failed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1952131 Title: Extra output from host command causes issue with ssh To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1952131/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
