Re: User feedback

[Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>]

Wolfram Gloger wrote:
> Anthony Liguori writes:
>
>   
>> http://kvm.qumranet.com/kvmwiki/AnthonyLiguori/Networking
>>
>> This is for Ubuntu but it probably works in Debian too. It uses NAT
>> instead of bridging and it is what I use on my desktop.
>>     
>
> Good advice, but why use a bridge interface _at all_ in this case?
>   

Because sometimes I launch more than one VM and I also wanted to be able 
to use dhcp in the guest.  But yeah, you're right, you could just 
preconfigure a bunch of tapN devices and that would solve the problem too.

Regards,

Anthony Liguori

> I have the following in /etc/network/interfaces:
>
> iface tap0 inet static
>         address 192.168.0.1
>         netmask 255.255.255.0
> 	pre-up iptables-setup-for-masq
>
> and in my qemu-ifup (or rather kvm-ifup):
>
> #!/bin/sh
> /sbin/ifconfig $1 0.0.0.0 up
> /sbin/ifup $1
> exit 0
>
> and that is all..  No more need for any bridging.
>
> BTW I think it would be an important feature to also have
> a qemu-ifdown / kvm-ifdown script to remove the iptables
> rules after the tap device disappears.
>
> Regards,
> Wolfram.
>
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>   


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