Comment 1 for bug 1799665

This works fine with the latest libssh 0.8.4, when building the Debian unstable package for 18.10, it works fine:

$ G_MESSAGES_DEBUG=cockpit-ssh cockpit-bridge --interact=---

{ "command": "open", "channel": "c", "payload": "echo", "host": "x0.cockpit.lan", "user": "<email address hidden>" }
---

{"command":"authorize","challenge":"*","cookie":"session109311540371777"}
---

{"command":"authorize", "response": "password foobarfoo", "cookie":"session109311540371777"}
---
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:06.880: cockpit-ssh x0.cockpit.lan: host not known in any local file, asking sssd
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.165: cockpit-ssh x0.cockpit.lan: using known hosts file /tmp/known-hosts.KIBHRZ
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.248: cockpit-ssh x0.cockpit.lan: connected
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.249: cockpit-ssh x0.cockpit.lan: verified host key
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.278: cockpit-ssh x0.cockpit.lan: agent auth failed
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.282: cockpit-ssh x0.cockpit.lan: Got prompt Password: prompt
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.995: cockpit-ssh x0.cockpit.lan: Couldn't set COCKPIT_REMOTE_PEER: Channel request env failed
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:07.995: cockpit-ssh x0.cockpit.lan: opened channel
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:08.071: cockpit-ssh x0.cockpit.lan: queued 162 bytes
(cockpit-ssh:10931): cockpit-ssh-DEBUG: 05:03:08.071: cockpit-ssh x0.cockpit.lan: wrote 162 bytes

{"command":"ready","channel":"c"}
---

I bisected this to this upstream fix: https://git.libssh.org/projects/libssh.git/commit/?id=45058285fca549876449afef2c32833b24817e77 . I prepare an SRU.

There are also a few other known_hosts fixes which should get included:

    https://git.libssh.org/projects/libssh.git/commit/?id=35a64554899f142a2b8b68c79007ad9c3ce00cb1
    https://git.libssh.org/projects/libssh.git/commit/?id=c1a8c41c5daf79e37aa5fde67dd94c8596e81102
    https://git.libssh.org/projects/libssh.git/commit/?id=893b69d82b4435973ec4d15aaecdf352f5f827e2