releng_4 patch for ip & tcp header fields

[Bill Fumerola]

if you run -current, you've already had this for three years. if you run
ipfw2, it was derived from -current's ipfw, so this still isn't relevant.

http://people.freebsd.org/~billf/ipfw_iphdr.patch

however, if you run 4.x with ipfw1 and you need the visibility into the
more obscure fields of the ip (len, tos, id, ttl, ver) or tcp (seq, ack,
win) headers, check this mfc patch out.

-- 
- bill fumerola / fumerola at yahoo-inc.com / billf at FreeBSD.org