Re: [Qemu-devel] Re: multiple virtual network with qemu

[Laurent Vivier <Laurent.Vivier@bull.net>]

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I don't know if it is what  you want, but I'm using this:

iptable-restore < my_iptable

where my_iptable is:

*filter
:INPUT ACCEPT [6242:8433725]
:FORWARD ACCEPT [8802:8139455]
:OUTPUT ACCEPT [4070:537046]
COMMIT
*nat
:PREROUTING ACCEPT [54:3534]
:POSTROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [1:60]
-A POSTROUTING -o eth0 -j MASQUERADE 
COMMIT

and /etc/qemu-ifup is:

#!/bin/sh
echo "Configuring $1"
sudo /usr/sbin/tunctl -t $1
sudo /sbin/ip link set $1 up
sudo /sbin/ifconfig $1 192.168.1.1 broadcast 192.168.1.255 netmask
255.255.255.0

And I configure the guest with IP 192.168.1.2 and gateway 192.168.1.1.

Laurent

Le vendredi 07 décembre 2007 à 10:14 +0100, nik600 a écrit :
> any idea?
> 
> On Nov 29, 2007 10:38 AM, nik600 <nik600@gmail.com> wrote:
> > Hi
> >
> > i'm trying to set up some virtual network with qemu but i'm
> > experiencing some problems:
> >
> > starting the hosted system with dhcp it gets the ip 10.0.2.15 and gw
> > 10.0.2.2, if i activate the forwarding ip on the hosting system all
> > works fine.
> >
> > But i'd like to do something like that:
> >
> >
> > - gw (192.168.1.1)
> >      | -> hosting machine (192.168.1.2)
> >             | -> virtual ip (192.168.1.3) -> NAT -> emulated system 1
> > (10.0.2.15)
> >             | -> virtual ip (192.168.1.4) -> NAT -> emulated system 2
> > (10.0.2.16)
> >
> >
> > Or if it possible
> >
> >
> > - gw (192.168.1.1)
> >      | -> hosting machine (192.168.1.2)
> >             | -> virtual ip (192.168.1.3) -> emulated system 1 (192.168.1.3)
> >             | -> virtual ip (192.168.1.4) -> emulated system 2 (192.168.1.4)
> >
> >
> > Can i do that?
> >
> > Thanks
> > --
> > /*************/
> > nik600
> > https://sourceforge.net/projects/ccmanager
> > https://sourceforge.net/projects/reportmaker
> > https://sourceforge.net/projects/nikstresser
> >
> 
> 
> 
-- 
------------- Laurent.Vivier@bull.net  --------------
       "Any sufficiently advanced technology is
  indistinguishable from magic." - Arthur C. Clarke

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