pcap-filter(7) on FreeBSD

The text 01f964fdd247, as FreeBSD 9.0-RELEASE, FreeBSD 8.4-RELEASE, FreeBSD 8.3-RELEASE, FreeBSD 8.2-RELEASE, FreeBSD 8.1-RELEASE, FreeBSD 8.0-RELEASE shipped it.

packet filter syntax

pcap-filter(7) on FreeBSD now