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Date: Sat, 1 Sep 2001 08:07:09 -0700 (PDT)
From: Flemming Jacobsen <fj@batmule.dk>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: misc/30255: [PATCH] Packets reinjected by natd but denied by ipfw generates annoying errors
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>Number:         30255
>Category:       misc
>Synopsis:       [PATCH] Packets reinjected by natd but denied by ipfw generates annoying errors
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Sat Sep 01 08:10:02 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Flemming Jacobsen
>Release:        4-stable
>Organization:
>Environment:
N/A
>Description:
When natd tries to reinject a packet which is denied by a (later) ipfw rule annoying logmessages of the form:
  natd[pid]: failed to write packet back (Permission denied)
are generated.
This patch adds an option to suppress these messages.
>How-To-Repeat:
Install FreeBSD on system with two network cards. Setup nat'ing.
Add an ipfw after the divert rule denying traffic.
Watch the logmessages.
>Fix:
Apply patch from: http://www.batmule.dk/FreeBSD/natd.EACCES.udiff
Add "-nolog_ipfw_denied" to natd commandline
Messages suppressed.

The patch has been tested on 3 moderatly used firewalls for nearly 5+ months without any noticeable ill effects.

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

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