This version of ssh uses the experimental hpn patch:
http://www.psc.edu/networking/projects/hpn-ssh/

Also you'll need to add a separate user for openssh: _sshd

useradd -d /nonexistant -s /bin/false -u 98 -g 98 _sshd

or even better install the `nologin' port and make it:

useradd -d /nonexistant -s /sbin/nologin -u 98 -g 98 _sshd