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[solved] SSH hostkey authentication and users' known_hosts files

also sprach martin f krafft <madduck@debian.org> [2004.11.01.0810 +0100]:
> We are successfully using SSH hostkey-based authentication for our
> cluster. What I find really strange is that users still get to see
> messages like:
>   Warning: Permanently added the RSA host key for IP address
>   '' to the list of known hosts.

Thanks to weasel, this is solved. The trick is to prefix each
hostkey with a comma-separated list of all the names ever used to
access it, including its IP:

  node36.cluster.ailab.ch,node36, ssh-rsa AAAAB3NzaC1yc[...]

Previously, I only had

  node36 ssh-rsa AAAAB3NzaC1yc[...]

Please do not send copies of list mail to me; I read the list!
 .''`.     martin f. krafft <madduck@debian.org>
: :'  :    proud Debian developer, admin, user, and author
`. `'`
  `-  Debian - when you have better things to do than fixing a system
Invalid/expired PGP subkeys? Use subkeys.pgp.net as keyserver!

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