RE: [Xen-users] How to determine DHCP address assigned to client

To:	"Mike O'Brien" <obrien@xxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	RE: [Xen-users] How to determine DHCP address assigned to client?
From:	"James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date:	Tue, 3 Feb 2009 09:23:21 +1100
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Thread-topic:	[Xen-users] How to determine DHCP address assigned to client?

> 
>       Is there any way to interrogate a client to determine what DHCP
> address was assigned to it?  The client, a Fedora 9 domU running on a
> CentOS 5.2 dom0, has no serial console, so there's no way to connect
> to it till I can find its address.
> 

A few options...
. You could get the machine to publish it's IP in xentstore
. use something like arpwatch in the logs of Dom0 and then grep for the
IP address
. examine the DHCP lease database
. use tcpdump with an 'ether src <mac of client>' filter
. nmap -sP <subnet> and then examine the arp cache

James

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RE: [Xen-users] How to determine DHCP address assigned to client?