Repeated "bootpd: service time" entries in Console

When I enable "Internet Sharing" under Lion 10.7.2, I'm seeing repeated "bootpd: service time" entries in my Console log. I'm seeing this message posted about 3-4 times per minute in the log file. And this is with no clients actually connected.

My "Internet Sharing" is configured to share my inbound Ethernet port to a Wi-Fi password-protected network.

Any ideas how to fix?

11/3/11 10:21:41.496 AM bootpd: service time 0.024201 seconds

11/3/11 10:21:49.171 AM bootpd: service time 0.000007 seconds

11/3/11 10:21:58.492 AM bootpd: service time 0.000007 seconds

11/3/11 10:21:58.497 AM bootpd: service time 0.000003 seconds

11/3/11 10:22:16.479 AM bootpd: service time 0.000007 seconds

11/3/11 10:22:39.494 AM bootpd: service time 0.000007 seconds

11/3/11 10:22:44.105 AM bootpd: service time 0.000009 seconds

11/3/11 10:22:57.152 AM bootpd: service time 0.000008 seconds

11/3/11 10:23:11.554 AM bootpd: service time 0.000008 seconds

11/3/11 10:23:20.667 AM bootpd: service time 0.000008 seconds

11/3/11 10:23:39.189 AM bootpd: service time 0.000008 seconds

11/3/11 10:24:06.559 AM bootpd: service time 0.000008 seconds

11/3/11 10:24:33.950 AM bootpd: service time 0.000007 seconds

11/3/11 10:24:39.138 AM bootpd: service time 0.000008 seconds

11/3/11 10:25:01.502 AM bootpd: service time 0.000007 seconds

11/3/11 10:25:15.751 AM bootpd: service time 0.000008 seconds

11/3/11 10:25:20.121 AM bootpd: service time 0.000007 seconds

11/3/11 10:25:29.097 AM bootpd: service time 0.000007 seconds

11/3/11 10:25:45.361 AM bootpd: service time 0.000008 seconds

11/3/11 10:25:56.467 AM bootpd: service time 0.000007 seconds

11/3/11 10:26:05.625 AM bootpd: service time 0.000007 seconds

11/3/11 10:26:09.744 AM bootpd: service time 0.000007 seconds