This has been applied prior to 8.1-RC2
so now only needed for old releases, so I have done
  mv ipfw.8.REL=ALL.diff ipfw.8.REL=8.0-RELEASE.diff
  ln -s ipfw.8.REL=8.0-RELEASE.diff ipfw.8.REL=4.11-RELEASE.diff
  ln -s ipfw.8.REL=8.0-RELEASE.diff ipfw.8.REL=6.2-RELEASE.diff
  ln -s ipfw.8.REL=8.0-RELEASE.diff ipfw.8.REL=6.4-RELEASE.diff
  ln -s ipfw.8.REL=8.0-RELEASE.diff ipfw.8.REL=7.2-RELEASE.diff

Subject: Re: bin/121424: Rectify ambiguous English in manual
From: FreeBSD-gnats-submit@FreeBSD.org
Date: Thu, 6 Mar 2008 11:30:02 GMT (12:30 CET)
To: "Julian H. Stacey" <jhs@@berklix.org>

Thank you very much for your problem report.
It has the internal identification `bin/121424'.
The individual assigned to look at your
report is: freebsd-bugs. 

You can access the state of your problem report at any time
via this link:

http://www.freebsd.org/cgi/query-pr.cgi?pr=121424

>Category:       bin
>Responsible:    freebsd-bugs
>Synopsis:       Rectify ambiguous English in manual
>Arrival-Date:   Thu Mar 06 11:30:02 UTC 2008


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To: FreeBSD-gnats-submit@@freebsd.org
From: "Julian H. Stacey" <jhs@@berklix.com> 
Reply-To: "Julian H. Stacey" <jhs@@berklix.com>
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>Submitter-Id:	current-users
>Originator:	"Julian H. Stacey" <jhs@@berklix.com>
>Organization:	http://www.berklix.com BSD Linux Unix Consultancy, Munich/Muenchen.
>Confidential:	no <FreeBSD PRs are public data>
>Synopsis:	Rectify ambiguous English in manual
>Severity:	non-critical 
>Priority:	low 
>Category:	bin
>Class:		change-request 
>Release:	FreeBSD 6.2-RELEASE i386
>Environment:
System: FreeBSD fire.js.berklix.net 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Mon Sep 17 23:01:21 CEST 2007 jhs@@fire.js.berklix.net:/usr1/src/sys/amd64/compile/FIRE64.small amd64


	<machine, os, target, libraries (multiple lines)>
>Description:
	Rectify ambiguous English, make it easier to read 1st. time,
	("may" can be read as a command, EG "you may not drive without a licence"
	"might" is more indicative, needs less chance of a 2nd. read).

>How-To-Repeat:
	-
>Fix:
	This patch applies to at least all between 4.0 & 7.0
	I append a copy of
	http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/src/gen/sbin/ipfw/ipfw.8.REL=ALL.diff

Rectify ambiguous English, make it easier to read 1st. time,
("may" can be read as a command, EG "you may not drive without a licence"
"might" is more indicative, needs less chance of a 2nd. read).

*** 4.0-RELEASE/src/sbin/ipfw/ipfw.8.orig	Tue Jul 18 13:48:16 2000
--- gen/src/sbin/ipfw/ipfw.8	Tue Jul 18 13:49:20 2000
***************
*** 577,583 ****
  .Cm recv
  is invalid.
  .Pp
! A packet may not have a receive or transmit interface: packets
  originating from the local host have no receive interface,
  while packets destined for the local host have no transmit
  interface.
--- 577,583 ----
  .Cm recv
  is invalid.
  .Pp
! A packet might not have a receive or transmit interface: packets
  originating from the local host have no receive interface,
  while packets destined for the local host have no transmit
  interface.
# *** 3.4-RELEASE/src/sbin/ipfw/ipfw.8	Thu Apr 13 11:25:36 2000
# --- jhs/src/sbin/ipfw/ipfw.8	Fri Apr 14 08:37:46 2000
# ***************
# *** 596,602 ****
#   .Ar recv
#   is invalid.
#   .Pp
# ! A packet may not have a receive or transmit interface: packets originating
#   from the local host have no receive interface. while packets destined for
#   the local host have no transmit interface.
#   .Pp
# --- 596,602 ----
#   .Ar recv
#   is invalid.
#   .Pp
# ! A packet might not have a receive or transmit interface: packets originating
#   from the local host have no receive interface. while packets destined for
#   the local host have no transmit interface.
#   .Pp