serial console, inappropriate ioctl?

I have a current system configured to use a serial console. I'm 
getting a 'login_tty /dev/console: Inappropriate ioctl for device'
to the console every few seconds.

bash-2.05b# cat /boot.config
-Dh

In /etc/ttys, i have set console as:
console  "/usr/libexec/getty std.115200" vt100   on  secure
and also have:
ttyd0   "/usr/libexec/getty std.115200" vt100   on secure

in the /boot/device.hints, i have:
hint.sio.0.flags="0x30"

bash-2.05b# uname -a
FreeBSD bsd7.phaedrus.sandvine.com 5.1-CURRENT FreeBSD 5.1-CURRENT #2: Sat
Nov 22 16:39:04 EST 2003
root_at_bsd7.phaedrus.sandvine.com:/d2/obj/d2/src/sys/GENERIC  i386

Nov 22 18:03:16 bsd7 getty[940]: login_tty /dev/console: Inappropriate ioctl
for device
Nov 22 18:03:16 bsd7 init: getty repeating too quickly on port /dev/console,
sleeping 30 secs

Any suggestions on what this might be coming from?

--don