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From "Boylan, James" <>
Subject Re: Multiple IP's to one instance
Date Thu, 22 Nov 2012 01:50:38 GMT
I also argue that what they are asking for really is in conflict of the purpose of a cloud
environment. If you are merely after a virtualized environment you can use vsphere, kvm with
virt-manager or xenserver. Multiple IPs per nic do nothing to improve the performance or the
functionality of a cloud environment.

Going down the road of adding features like that would be taking valuable development time
away from tasks and features that actually benefit a cloud architecture. While I do understand
their issue, there are other ways of implementing what they are listing as reasons that is
cloud architecture friendly. (using NAT and isolated private networks for one)

-- James

----- Original Message -----
From: David Nalley []
Sent: Wednesday, November 21, 2012 06:12 PM
To: <>
Subject: Re: Multiple IP's to one instance

>  - it is expected that there is a 'primary ip' assigned by DHCP and the
> additional ips are assigned manually by the VM owner. However additional
> ips are requested through CS API/UI.

I am conflicted on this - I know the limitations with adding
additional interfaces. I'd almost argue for requiring number of
interfaces/IPs to be set at machine instantiation and still handing
out addresses to all interfaces via DHCP, but not all OSes will handle
that cleanly.

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