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From: Guy Van Den Bergh <guy.vandenbergh@pandora.be>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Tunnel problem
Date: Sun, 18 Mar 2001 15:03:56 +0000	[thread overview]
Message-ID: <marc-lartc-98492807503126@msgid-missing> (raw)
In-Reply-To: <marc-lartc-98488235413926@msgid-missing>

Have you brought the tunnel device up?
try: ip link set dev <tunneldevice> up

When I try to set the default route without the device being up
I get the same message...

Have you configured the tunnel devices at both ends at all (up, 
addresses and such)?

Regards,
Guy

When i try to set
David A. Bandel wrote:

> Guy Van Den Bergh wrote:
> 
>> Have you tried to set a default route to the IP address of the tunnel
>> interface at the main network:
>> ip route add default via a.b.c.d
>> where a.b.c.d is the IP address you gave to the tunnel interface at the
>> main network end.
> 
> 
> RTNETLINK answers: Network is unreachable
> 
> This is the same answer when I try to set the default route via the
> tunnel name.
> 
> 
>> David A. Bandel wrote:
>> 
>> 
>>> Ladies and Gentlemen (and others ;-) ),
>> 
>>> back through the main network.  Reason: some connections realize that
>>> traffic coming from my relocate network is coming via an invalid route
>>> and is filtered.
>> 
>> this is also called RPF or reverse path filtering, and is sometimes used
>> as a partial countermeasure against spoofed ddos attacks
> 
> 
> yes, I know, I turn it on too on systems that aren't tunnel endpoints.
> 
> 
>> Regards,
>> Guy
> 
> 
> Ciao,
> 
> David A. Bandel



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http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/

  parent reply	other threads:[~2001-03-18 15:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-18  2:23 [LARTC] Tunnel problem David A. Bandel
2001-03-18  2:41 ` Guy Van Den Bergh
2001-03-18 15:03 ` Guy Van Den Bergh [this message]
2001-03-18 20:17 ` David A. Bandel
2001-03-19  0:04 ` Guy Van Den Bergh

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