From owner-freebsd-questions  Thu May 20 18:23:37 1999
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From: "David Hedge" <dhedge@wa.yokogawa.com.au>
To: cjclark@home.com
Date: Fri, 21 May 1999 09:25:02 +1100
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Subject: Re: packet duplication
Cc: freebsd-questions@FreeBSD.ORG
In-reply-to: <199905200328.XAA14187@cc942873-a.ewndsr1.nj.home.com>
References: <199905200041.KAA19848@wa.yokogawa.com.au> from David Hedge at "May 20, 99 08:49:57 am"
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Crist,

Thanks for the quick response. I managed to solve it. IP forwarding 
was still set to 1, even though the gateway parameters were 
disabled.

Doing "sysctl -w net.inet.ip.forwarding=0" fixed the problem.

Regards,

David Hedge.


> David Hedge wrote,
> > I have a network with all hosts on the same subnet, with netmask 
> > 255.255.0.0.
> 
> Uh, oh.
> 
> > Most are running FreeBSD, a couple are running HP-UX.
> > When I ping, I get duplicate packets, and traceroute indicates a hop via
> > another host.
> 
> Is this always the same host? Do you get duplicate packets when you
> ping from any machine? On both OSs?
> 
> > No default gateways are defined, though one was but was 
> > removed from the configuration.
> > "netstat -r" does not show the route (nor should it when it is on the
> > same subnet).
> 
> It sure should show the local route. Could you show us the 'netstat
> -rn,' 'ifconfig -a,' and 'traceroute' output from an effected machine? And
> again, any pattern to which machines are doing this?
> 
> > 22 machines are running FreeBSD 2.1.0, 2 are running FreeBSD 2.2.2, and 
> 
> Is there a good reason these have not been upgraded? (Although I
> cannot say it has anything to do with the problem.)
> 
> > 2 are running HP-UX 10.20.
> > What can I do to stop the packet duplication??? 
> 
> Can't quite say yet.
> -- 
> Crist J. Clark                           cjclark@home.com
> 


Regards,
David Hedge
Systems Engineer
Yokogawa W.A.
Email: dhedge@wa.yokogawa.com.au


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