device not configured in SSH chroot

I've set up a chroot account using ssh's ChrootDirectory[1] keyword on OpenBSD 4.4 on a Soekris (i386) net4801. It works nicely, except that I get some device errors in the chroot, but not the regular accounts. Upon connecting with SSH with the chrooted account, there is an error about tty:

Resolved - Re: device not configured in SSH chroot

Moving the chroot to a new CF with a different partitioning scheme meant that it ended up on one mounted 'nodev', changing the mount options fixed the problem. -Lars