Hi, I'm not sure ssh-keyscan was ever defined to have bad RC in that case. The man page is empty, and the bit that I found online says:
RC=0 No usage errors. ssh-keyscan might or might not have succeeded or failed to scan one, more or all of the given hosts. RC=1 Usage error. Yes it changed in between Trusty and Xenial but that I think is just an upstream change. -- 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/1661745 Title: ssh-keyscan does not exit with non-zero return code on error Status in openssh package in Ubuntu: New Bug description: On xenial, ssh-keyscan returns zero indicating success, when the command fails. root@cp1:~# lsb_release -d Description: Ubuntu 16.04.1 LTS root@cp1:~# ssh-keyscan -H -t ssh-rsa bad-host getaddrinfo bad-host: Name or service not known root@cp1:~# echo $? 0 On trusty, the exit status is non-zero as expected. root@integration-deployer:/home/ubuntu# lsb_release -d Description: Ubuntu 14.04.5 LTS root@integration-deployer:/home/ubuntu# ssh-keyscan -H -t ssh-rsa bad-host getaddrinfo bad-host: Name or service not known root@integration-deployer:/home/ubuntu# echo $? 255 This is a incompatibility between Ubuntu 14.04 and 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1661745/+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
