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From: gypsy <gypsy@iswest.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] iproute2 ping  question
Date: Thu, 30 Jun 2005 02:11:03 +0000	[thread overview]
Message-ID: <42C354B7.91D84882@iswest.com> (raw)
In-Reply-To: <42C32CB7.6020505@theorb.net>

lartc user wrote:
> 
> Hi List,

> Would somebody please explain how to use ip to attach the addresses to
> that interface and have it respond to them?

I use ProxyARP because it is the only thing that made sense to me.  In
"iptables speak", the external interface receives all packets destined for my
/29 network but it puts into INPUT only those with the IP I assign to the
NIC.  The rest go to the FORWARD chain and thus on to 4 "internal" machines
that have external IPs.  Two of those "internal" machines have 2 external
IPs.  I do that like this:

ifconfig eth1 IPAddr1 broadcast BcastIP1 netmask 255.255.255.248
ifconfig eth1:0 IPAddr2 broadcast BcastIP2 netmask 255.255.255.248
ip route add GatewayIP2/32 dev eth1 src IPAddr2

On the machine doing ProxyARP:
ip link set eth1 up
ip addr flush dev eth1
ip addr add dev eth1 local 1.1.1.2/32 brd 1.1.1.255
ip route add GatewayIP/32 dev eth1 src 1.1.1.2

You can see my scripts at http://yesican.chsoft.biz/lartc and you can get more
from ftp://andthatsjazz.org/pub/lartc
--
gypsy
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      reply	other threads:[~2005-06-30  2:11 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-29 23:20 [LARTC] iproute2 ping question lartc user
2005-06-30  2:11 ` gypsy [this message]

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