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Re: [libvirt] [PATCH 0/7] Introduce API for dumping domain IP addresses



On 06/08/2012 05:13 PM, Michal Privoznik wrote:
On 08.06.2012 11:02, Alex Jia wrote:
On 06/08/2012 04:04 PM, Michal Privoznik wrote:
This feature has been requested for a very long time. However,
I'm very glad to see this patch :-)
we had to wait for guest agent to obtain reliable results as
Yeah, it's a good way to get guest IP by GA, the disadvantage is we have
to depend on
GA installation the guest, sometimes, it probably is a trouble thing,
for example, I use
virt-v2v to convert a existing ESX VM into libvirt then the ESX VM
impossible had GA
installation ago, if I want to automate to finish all of stuff, but I
don't know VM IP address,
so I can't automatically install GA in the converted VM, it may be a
special case for you.

However, 'tcpdump' or 'nmap' can do the same thing without GA
installation in the guest,
maybe, we may have optional solution for how to get guest IP, of course,
it's just my idea.
I do agree. But a guest can be evil and send spoofed packets, or just
Indeed.
run another guest inside which makes it hard to recognize which guest an
IP belongs to. But I think this can be implemented anyway - but must
It should be not a question, because we may easy to know guest's MAC address then
map MAC address into IP address.
make sure users know abut certain unreliability of such method.

Michal


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