Martian source with 2 external interfaces

Martian source with 2 external interfaces

[Jan Andersen]

Hi

 

I have a setup with 3 interfaces, one for the LAN, one for a cable-modem and
one for DSL.

 

What I want (and need) is to have both external interfaces running at the
same time.

 

When I one have my LAN and one of the external running then everything is
working just fine. But when I turn on both interfaces at the same time my
machine is generating a huge amount of martian-source errors in the log. I
even tried to turn off the firewall, but with out luck.

 

Why is this happening, and how do I solve this problem? 

 

Regards

 

Jan Andersen

 

Re: Martian source with 2 external interfaces

[/dev/rob0]

Jan Andersen wrote:
> What I want (and need) is to have both external interfaces running at the
> same time.

http://www.ssi.bg/~ja/nano.txt
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Re: Martian source with 2 external interfaces

[George Alexandru Dragoi]

for i in /proc/sys/net/ipv4/conf/*/log_martians ; do
echo 0 > $i
done


And you are done :).

I believe you have the problem because some packets go out to one
interface, and comes back to the other, a common thing to asymetric
routing. I doubt you have hundred of thousounds routes , so you must
use some complicated setup for your load balancing to get those
errors.

On 7/17/05, Jan Andersen <jma@agile.dk> wrote:
> Hi
> 
> 
> 
> I have a setup with 3 interfaces, one for the LAN, one for a cable-modem and
> one for DSL.
> 
> 
> 
> What I want (and need) is to have both external interfaces running at the
> same time.
> 
> 
> 
> When I one have my LAN and one of the external running then everything is
> working just fine. But when I turn on both interfaces at the same time my
> machine is generating a huge amount of martian-source errors in the log. I
> even tried to turn off the firewall, but with out luck.
> 
> 
> 
> Why is this happening, and how do I solve this problem?
> 
> 
> 
> Regards
> 
> 
> 
> Jan Andersen
> 
> 
> 
> 


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