S/Key Password prompt using ssh

[Aaron Brashears <gila@gila.org>]

I recently upgraded my workstation to the latest unstable. Then, I
attempted to ssh into a freebsd server I do some work on, but got the
following unusual message:

otp-md5 128 fl6641 ext
S/Key Password:


I'm not exactly sure what it's asking for, and using my password
doesn't work.

Using the version of ssh on my workstation, I am able to ssh into a
debian stable box, and from there, ssh into the freebsd box. However,
this is really sub-optimal, since I want to work from my workstation,
and not the local server.

What's going on?