Re: [Qemu-devel] several guests with static ip-address

[Michael Kapp]

> On Tue, 25 Oct 2005, Michael wrote:
> 
> > is it possible, that several (for example two) guests communicate to one
> > qemu host, which has only one network interface and every os has it's
> > own static ip-address?
> 
> Yes, with TUN networking this works fine. Have used this in
> 
>    - bridged including the host interface, giving each QEMU a static ip on
> the LAN.
> 
>    - non-bridged, routing via the host, with masquerade firewall rules on 
> the host to allow traffic to the LAN. Each qemu in a separate network to 
> simplify the host side.
> 
>    - vde, routing via the host, with masquerade firewall rules on the host
> for allowing traffic to the LAN. All the qemu instances in the same 
> network (but different host addresses).
> 
>    - bridged, not including the host interface. Same as vde.
> 
> All this is with only one network interface on the host.
> 
> Note: when using tun, each qemu instance gets it's own virtual tun/tap 
> interface on the host.
> 
> Note2: The vde based setup is generally the simplest to get correct.

---

OK, can you give me some hints how to do that?

I've tested it with a tun/bridged setup, but it only work with one guest,
here is my configuration for the qemu-ifup script:

--
 
ifconfig eth0 down
brctl addbr br0
ifconfig eth0 0.0.0.0 promisc up

ifconfig tun1 0.0.0.0 promisc up

ifconfig br0 192.168.1.3 netmask 255.255.255.0 broadcast 192.168.1.255 up
brctl stp br0 off
brctl setfd br0 1
brctl sethello br0 1
brctl addif br0 eth0
brctl addif br0 tun1
route add default gw 192.168.1.1

--

...this works so far. But how can i get another guest into this subnet?

Regards,
Michael

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