pfsync broadcasts without CARP/pfsync enabled

[Wes Santee]

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Greetings!

I noticed that in FreeBSD 6.1-RELEASE, I'm seeing a lot of pfsync
broadcasts.  However, I have neither CARP nor pfsync enabled on the
box.  Anyone know where these are coming from and how I can stop them?

$ tcpdump -n -i ath0 proto pfsync
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ath0, link-type EN10MB (Ethernet), capture size 96 bytes
22:40:41.232887 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:41.273770 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:42.232928 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:43.232635 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:44.282448 IP 10.0.0.2 > 0.0.0.0:  pfsync 452
22:40:45.291284 IP 10.0.0.2 > 0.0.0.0:  pfsync 452
22:40:45.771212 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:46.514065 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:46.517593 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:47.514947 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:48.574785 IP 10.0.0.2 > 0.0.0.0:  pfsync 228
22:40:48.919877 IP 10.0.0.2 > 0.0.0.0:  pfsync 452
22:40:48.992723 IP 10.0.0.2 > 0.0.0.0:  pfsync 900
^C
13 packets captured
21 packets received by filter
0 packets dropped by kernel

I've got 2 interfaces in the box, but it's only happening on ath0
(which is the only wireless NIC).  Note that these appear to be pfsync
protocol broadcast packets, not pfsync multicast packets.

Cheers,
- -Wes
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