This patch includes net/bpf.h so that libpcap will use that instead of its own
stripped down version, that doesnt't allow for pflogd to work correctly.

Index: fbsd-6/contrib/pf/pflogd/pflogd.c
===================================================================
--- fbsd-6.orig/contrib/pf/pflogd/pflogd.c
+++ fbsd-6/contrib/pf/pflogd/pflogd.c
@@ -37,6 +37,7 @@ __FBSDID("$FreeBSD: src/contrib/pf/pflog
 #include <sys/ioctl.h>
 #include <sys/file.h>
 #include <sys/stat.h>
+#include <net/bpf.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>