Require Multiple keys per host

[Markus Friedl]

On Tue, Jan 08, 2002 at 05:41:57PM -0800, bob-openssh at technogeeks.com wrote:
> As of version 3.0.2p1 and perhaps earlier localhost forwarded connections
> are checked in known_hosts.  The difficulty is that if you have multiple
> forwards, only one of them will exist as a valid host key for localhost.

try to read the manpage,
check that HostKeyAlias or UserKnownHosts work, and
if you really need, use NoHostAuthenticationForLocalhost