libpcap currently fails to build on the kfreebsd-amd64 buildd
because the configure script enables zerocopy BPF and the associated
code path is apparently missing some includes. On the kfreebsd-i386
buildd it doesn't get enabled, so the package builds.
This feature is apparently new in FreeBSD 8, so I don't know if I
should make libpcap always disable zerocopy, or if we plan on
supporting FreeBSD+ 8 only (in which case I'd make the build fail if
we *can't* enable it).
Romain Francoise <email@example.com>