RE: [Xen-devel] RE: [patch, rfc] put IP addresses into xenstore (Gerd Knorr)

["Bonnell, David" <David_Bonnell@xxxxxxx>]

Arping sends ARP "who-has" requests, either broadcast or directed to a
specific MAC address and displays the responses.  I retrieve the MAC
address of each VIF of each domain from XenStore and use arping to
obtain the associated IP address.

http://freshmeat.net/projects/arping/


Regards,


David Bonnell
Corporate Architect
BMC Software

-----Original Message-----
From: Gerd Knorr [mailto:kraxel@xxxxxxx] 
Sent: Thursday, 22 December 2005 10:48 AM
To: Bonnell, David
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] RE: [patch, rfc] put IP addresses into xenstore
(Gerd Knorr)

Bonnell, David wrote:
> I have been using arping to do a reverse ARP on the MAC address(es) to
> obtain the IP address(es) used by each domain but this will be easier.

How does that work?  What I've found depends on either the host replying

to broadcast pings or on brute-force, i.e. try every IP address in the 
network (which isn't exactly nice, especially in a /16 ...).

cheers,
   Gerd


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