Link to ftp.de.openbsd.org on http://www.openssh.com/portable.html

[Martin Schröder]

Apparently they have restructered there fs: Instead of
ftp://ftp.de.openbsd.org/pub/unix/OpenBSD/OpenSSH/portable/
it's now
ftp://ftp.de.openbsd.org/pub/OpenBSD/OpenSSH/portable/

Best
  Martin