Solaris9 cron and UDP port 32820

Can someone shed some light on this for me? When (and why) did
cron start listening on an UDP port?

And no, this is not an April Fools Day gag (that has been the
most common response to my queries on this :-)

$ ps -ef | grep cron
    root   212     1  0   Mar 30 ?        0:00 /usr/sbin/cron
$ lsof -p 212
COMMAND PID USER   FD   TYPE        DEVICE SIZE/OFF   NODE NAME

[snip]

cron    212 root    5u  IPv4 0x300017039e8      0t0    UDP *:32820 (Idle)

[snip]

$

-stacy