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Date:      Tue, 18 May 1999 12:10:04 -0700 (PDT)
From:      mitch@hardwarestreet.com
To:        freebsd-gnats-submit@freebsd.org
Subject:   kern/11766: Can not traceroute through ipnat.
Message-ID:  <19990518191004.52587150E6@hub.freebsd.org>

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>Number:         11766
>Category:       kern
>Synopsis:       Can not traceroute through ipnat.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 18 12:20:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Mitch Wright
>Release:        FreeBSD 3.1-RELEASE #0
>Organization:
HardwareStreet.com
>Environment:
bash-2.02# uname -a
FreeBSD bc.internetstreet.net 3.1-RELEASE FreeBSD 3.1-RELEASE #0: Sun Mar 28 09:54:29 PST 1999     mitch@bc.netline.com:/usr/src/sys/compile/BC  i386
>Description:
I have enabled the IPFILTER options in the kernel and am making use of ipnat.  Most things work as expected; however, traceroute does not.
It simply times out after hitting the NAT box and goes no further.

I've cvsup'd the latest sources, but that hasn't seemed to help.
>How-To-Repeat:
The obvious.... enable IPFILTER in your kernel and set up ipnat.
The rules I am using are quite simple..

map fxp1 10.20.30.0/24 -> 207.20.86.209/32 portmap tcp/udp 10000:65000
map fxp1 10.20.30.0/24 -> 207.20.86.209/32
#
map fxp1 10.20.30.0/24 -> 207.20.86.209/32 proxy port ftp ftp/tcp

>Fix:
Well... I think it is simply a matter of updating the version of
ipfilter being used.  A similar (same?) bug is mentioned in the HISTORY
file of the latest ipfilter (3.2.10).

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


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