docs/129095: Can not check that packet originating/destined for local host

[Eugen Konkov]

>Number:         129095
>Category:       docs
>Synopsis:       Can not check that packet originating/destined for local host
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Nov 23 17:20:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Eugen Konkov
>Release:        7.1-PRERELEASE
>Organization:
ISP Konkov
>Environment:
FreeBSD home.kes.net.ua 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #: Sun Nov 23 17:19:12 EET 2008     kes at home.kes.net.ua:/usr/obj/usr/src/sys/KES_KERN_v7  i386

>Description:
man ipfw
...
             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.

How to check that packet originating from the local host?
ipfw allow all from any to any out recv null
ipfw allow all from any to any in xmit null
null stands for there is not receive/transmit interface
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: