Re: [Xen-users] Domain interfaces

["Todd Deshane" <deshantm@xxxxxxxxx>]

On Jan 25, 2008 9:45 AM, Alasdair P Mclean <mcleanap@xxxxxxxxxxxxx> wrote:

Dear all,

we're currently setting up several (many) domains which all need to communicate with Dom0, but not with the outside world. What we need is a way to specify that guest domains virtual interfaces (vifx.x) should not be bridged to the physical interface (eth0) - is this possible?.

Yes, you can setup a dummy0 device in Dom0 to be used for this purpose.

1. Create the dummy0 network interface device (as simple as creating a network device and loading the dummy module appropriately) - this process is of course distro specific

2. Specify the (network-script 'network-bridge netdev=dummy0') in xend-config.sxp. If you need other accesses you will need to setup a custom script that handles that.

3. use the appropriate vif=['bridge=xenbrX'] for the guest config.

Also when specifying the mac address and ip in the config file (as per the manual) it doesnt seem to have any effect on ip and mac the domain actually uses (defaults are used instead). Is there some other way to specify this?

From my experience MAC address hhas always worked. I would be surprised that it doesn't for you. Post the relevant config for that and also the Xen version etc.

Setting the IP I have often had to do manually in the guest to match. I am not sure if this was/is a bug or is by design.

Best Regards,
Todd

Thanks in advance,
Alasdair

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