Re: [Xen-users] Help me to set up network (routes)

[AlannY <m@xxxxxxxxx>]

AlannY wrote:
>
Ok. I found more better solution. It's called Bridging+NAT.

So, a small tutorial.

1) With methods of your OS create a dummy (empty) bridge: br0 (setup its 
options).
2) Set up IP for bridge. (For example, 10.0.2.1)
2) Edit /etc/xen/xend-config.sxp:
    (network-script /bin/true)
    (vif-script vif-bridge)
3) Edit your VM configuration file:
    vif = [ 'bridge=br0' ] # it's the bridge, which we created in step 1
4) Load DomU. Change DomU network configuration:
    IP: Any IP in network specied in step 2 (for example, 10.0.2.2)
    Mask: Mask from step 2 (for example, 255.255.255.0)
    Gateway: Bridge from step 1 IP (for example, 10.0.2.1)
5) In Dom0 apply 2 iptables rules (kernel must be compiled with NAT 
support):
    iptables -t nat -A POSTROUTING -s <IP FROM STEP 4> -j MASQUERADE
    iptables -t nat -A POSTROUTING -d <IP FROM STEP 4> -o <BRIDGE FROM 
STEP 1>
6) Start DomU

That's all. Dom0 accessed from DomU via Bridge IP (step 2). DomU 
accessed from Dom0 via DomU IP (STEP 4).
Everything must work at this point ;-)

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