From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tim Groeneveld <tim@timg.ws>
Date: Mon, 15 Oct 2007 12:14:44 +0000
Subject: Re: [LARTC] Routing public IP's through a gateway
Message-Id: <200710152214.46148.tim@timg.ws>
MIME-Version: 1
Content-Type: multipart/mixed; boundary="===============0620204946=="
List-Id: <lartc.vger.kernel.org>
References: <200710142307.12127.tim@timg.ws>
In-Reply-To: <200710142307.12127.tim@timg.ws>
To: lartc@vger.kernel.org

--===============0620204946==
Content-Type: multipart/signed; boundary="nextPart3356586.ZFCJPnFuND";
	protocol="application/pgp-signature"; micalg=pgp-sha1
Content-Transfer-Encoding: 7bit

--nextPart3356586.ZFCJPnFuND
Content-Type: text/plain;
  charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

On Sunday 14 October 2007 11:07:10 pm Tim Groeneveld wrote:
> Greeting all,
>
> I have a bit of a complicated question.
>
> I have two ethernet devices, eth1 and eth2.
>
> eth1 is where my internet comes from. It is in the form of
> 202.172.122.208/29. It has another IP range, 202.172.122.72/29. What I wa=
nt
> to be able to do is route 202.172.122.72/29 to eth2, so that other machin=
es
> can use those IPs, any ideas on how to do this, I cannot work out how to =
do
> this.
>
> eth2 has a DHCP server, which only gives out IPs 202.172.122.74 to
> 202.172.122.76.
>
> eth1 is basically just hooked into my internet router, while eth2 is hook=
ed
> into a switch, and will be used for other computers.
>
> If anyone could help me with this setup, I would more then appreciate it.
>
> Thank you very much,
>
>      - Tim Groeneveld
>

To extend what I have tried to say further:

My ISP has given me two IP ranges. 202.172.122.208/29 and 202.172.122.72/29=
=2E=20
They are unable to give me any larger IP ranges for some lame excuse, which=
 I=20
am sure was written by the BOfH.

Does your isp route 202.172.122.72/29 to me? Why yes it does. It routes thi=
s=20
IP through the gateway 202.172.122.209.

If I want to give a machine an IP in 202.172.122.72/29, this is what I need
   > A machine already in the 202.172.122.208/29 IP range.
   > ip route add 202.172.122.72/29 via 202.172.122.209 dev eth1
   > ifconfig eth1 202.172.122.73 netmask 255.255.255.248
(where on this machine, eth1 is hooked into my router).

What I would like, is a gateway machine, which will use eth2 to provide a=20
gateway for other machines to assign themselves .72/29 IP's, *without* the=
=20
need of 202.172.122.209 being in the route table.

So, there would be *one* gateway machine. This gateway machine has (already=
)=20
an IP on both ranges.
    > 202.172.122.211 (eth1)
    > 202.172.122.74 (eth2)

eth2 would then be connected into a switch, and eth1 into the internet rout=
er.

I am not sure if this helps at all, sorry if it does not.

Thanks again,
     - Tim G

--nextPart3356586.ZFCJPnFuND
Content-Type: application/pgp-signature; name=signature.asc 
Content-Description: This is a digitally signed message part.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQBHE1m2RPexiTfIAEIRAv9eAJ91j8pDvsvVFgBV828qAYUV9erOqQCgz/hl
6LO04qntW2f2Sbfv9zVdbfU=
=w5if
-----END PGP SIGNATURE-----

--nextPart3356586.ZFCJPnFuND--

--===============0620204946==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
LARTC mailing list
LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc

--===============0620204946==--