On Jan 9, 2012, at 8:41 PM, Tom Eastep wrote:

> 
> On Jan 9, 2012, at 7:51 PM, Nick wrote:
>> 
>> Originally I had shorewall set to detect the gateway.  This setup was 
>> crashing randomly when pppoe restarted the connection with this  kind of 
>> error:
>>   ERROR: Command "ip -4 route replace default scope global table 254 
>> nexthop via 203.33.255.161 dev eth1 weight 1 nexthop via 203.33.255.161 
>> dev eth2 weight 1" Failed
> 
> Did you see the word 'detect' in my post?
> 
>> 
>> I can reproduce the error by setting the gateways to the same address.
> 
> Which is a configuration that will never work. Neither Shorewall nor the 
> Linux IP stack will handle that.
> 
>> 
>> I don’t have the ability to control the gateway assigned to me on the PPPOE 
>> session and occasionally my ISP will assign me the same gateway via DHCP 
>> over the PPPOE connection
>> 
>> Since this setup is reasonably difficult to reproduce I have demonstrated an 
>> easy method to reproduce the issue by editing the providers file.
>> 
>> I am simply doing this to assist in improving shorewall as I do have a work 
>> around. :)
>> Considerable time and effort has gone into researching this issue with 
>> nothing found on the internet to suggest that Shorewall is incapable of 
>> operating two ISP if they happen to use the same gateway.
> 
> 
> I repeat: Place the single character '-' in the GATEWAY column for PPOE 
> providers. I am convinced that you will not see any problems with the modems 
> in bridging mode.


Sorry; I don't mean to be offensive and I appreciate the fact that you are 
trying to help. But point-to-point interfaces don't require a gateway because 
there is only one host at the end of the point-to-point connection. So anything 
sent through a PTP interface will end up at the 'gateway'. And specifying a 
gateway explicitly or asking Shorewall to detect the gateway just messes things 
up.

Regards,
-Tom

Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________



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