Bug#733573: ssh: Doesn't use the key from -i when using an agent.

[Daniel Shahaf <danielsh@apache.org>]

Kurt Roeckx wrote on Mon, Dec 30, 2013 at 01:53:39 +0100:
> Package: openssh-client
> Version: 1:6.4p1-1
> 
> Hi,
> 
> When I use ssh with the -i option to use a different key, it seems
> to be offering my default key anyway.  It seems this is only the
> case when an ssh-agent is running.  The key that is given isn't
> added to the agent.
> 
> ssh -v shows:
> debug1: identity file other_key type 1
> debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-4096
> debug1: Checking blacklist file /etc/ssh/blacklist.RSA-4096
> debug1: identity file other_key-cert type -1
> [...]
> debug1: Authentications that can continue: publickey
> debug1: Next authentication method: publickey
> debug1: Offering RSA public key: /home/kurt/.ssh/id_rsa
> 
> When ssh doesn't know about my running ssh-agent, it will offer
> the key given with -i.

Looks like a duplicate of #203700 and #513235; a workaround is to set
IdentitiesOnly=yes in ssh_config(5).

Cheers,

Daniel