Re: [gentoo-user] {OT} A simple routing problem

[Nilesh Govindrajan]

On Tuesday 18 December 2012 10:59:41 PM IST, Kevin Brandstatter wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 12/18/2012 09:14 AM, Nilesh Govindrajan wrote:
>> On Tuesday 18 December 2012 10:39:43 PM IST, Kevin Brandstatter
>> wrote: On 12/18/2012 05:27 AM, Nilesh Govindrajan wrote:
>>>>> On Tuesday 18 December 2012 03:41:44 PM IST, J. Roeleveld
>>>>> wrote:
>>>>>> On Tue, December 18, 2012 04:44, Nilesh Govindrajan wrote:
>>>>>>
>>>>>> <SNIP>
>>>>>>
>>>>>>> Actually my fiber connection has a smaller limit than the
>>>>>>> ADSL connection. I am trying to use the fiber connection
>>>>>>> for all activities except some torrent downloading for
>>>>>>> which I want to use my ADSL connection. Once I'm able to
>>>>>>> route through the ADSL gateway, it would be easy for me
>>>>>>> to setup another ip on eth0 on my machine on which
>>>>>>> transmission could listen. All traffic on that ip would
>>>>>>> be routed through ADSL and otherwise the fiber.
>>>>>>
>>>>>> Nilesh,
>>>>>>
>>>>>> I read that you managed to fix it, but for completenes and,
>>>>>> if applicable, a different solution would be a router with
>>>>>> 2 or more WAN-ports that can do the routing for you. Added
>>>>>> benefit there would be that if the fiber connection dies,
>>>>>> it would be able to automatically route everything through
>>>>>> the ADSL.
>>>>>>
>>>>>> -- Joost
>>>>>>
>>>>>>
>>>>>
>>>>> Yeah that solution is always there, but I'm not going for
>>>>> that since I'm evaluating the fiber connection (a new ISP in
>>>>> my locality). Won't need the ADSL may be after a month or so
>>>>> when I'll have unlimited plan on fiber.
>>>>>
>>>>> @Pandu, or may be the DSL ISP was down yesterday when I was
>>>>> trying.
>>>>>
>>>>> The problem is not exactly fixed yet, although I'm able to
>>>>> add static routes on the DDWRT router using route command
>>>>> (and it is working), there's no way to route all traffic from
>>>>> a source via the other router. It doesn't have iptables ROUTE
>>>>> target neither iproute2 support.. is there some other method
>>>>> do to this using iptables?
>>>>>
>>>>> The whole problem would be solved if I could add routes on my
>>>>> local machine, but that doesn't seem to work. It always goes
>>>>> via fiber which is the default route.
>>>>>
>>>>> The final solution to this problem would be putting in a
>>>>> Linux machine there. I'm trying to build Gentoo for the
>>>>> Raspberry Pi which can be used for this task, but stuck at
>>>>> Python since it won't cross compile. Anyway that's another
>>>>> topic.
>>>>>
>>>>> -- Nilesh Govindarajan http://nileshgr.com
>>>>>
>> you actually can add routes on a local machine. the real trick
>> would be to have them pushed from the dd-wrt box so that they dont
>> have to be manually set each time
>>
>> -Kevin
>>>
>>
>> How??
>>
>> -- Nilesh Govindarajan http://nileshgr.com
>>
>
> with the route add command.
> obviously not as clean as an iptables forward rule which is also an option
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.11 (GNU/Linux)
> Comment: Using GnuPG with undefined - http://www.enigmail.net/
>
> iQEcBAEBAgAGBQJQ0KgFAAoJEAwpfz/ORQZCYDwH/0lZMsp+Ncr2kO5iVbuX5Oje
> 3PUuelWA3IxhF7xmRkNoyMZr+A5QGGWajp7JHPHSSJ/k+Iv7h3xYDABgRwm3tSaP
> S0tM0VwFVLXHukhUo8vWFOqU6vmCrTuhNtiTYehFYXXS2pzc07kG+b27aH1RSKsD
> 6zrha22EbaNe7c4dtdVY4rQ/GtPbpiDjAjvQev0nEreP4uLtwWJmx6V6onlGObGi
> 0v6TVs9dB7fXQh2z5XaYt4BQ1ORqzi0o2ocKTOURJd23kQAXRDfI96+xjG8Bro77
> AcaxjXq8bP/W8mdDqFL3w44CF7QDca3uXKAOlGC1Qbm9XVmkETpCQrlzL8aKM0k=
> =oIGG
> -----END PGP SIGNATURE-----
>

I'm presently ssh'ing into the DDWRT router and doing this:

route add -host <hostname> gw 192.168.0.32

and it's pretty much working, except that I've to add a route to every 
host for which I want to use the ADSL connection.

If I do the same on my local machine, it doesn't work and packets still 
end up going through my fiber connection.

Would iptables ROUTE target help if I use that on my local machine?

--
Nilesh Govindarajan
http://nileshgr.com