[Cialug] Slightly OT- Windows Mobile grabbing random IPs..

[Dave J. Hala Jr.]

If its a random occurence, some one could have a machine on the network
that has dhcp enabled. You could also have someone plugging in an
unauthorized wifi router into network. (this happens more than you'd
think)


:) Dave

On Tue, 2007-05-08 at 09:15, Jonathan C. Bailey wrote:
> Ok.. I haven't gone to do packet sniffing yet, but .9 is the DHCP server - .2 isn't (it's SQL and file sharing on Win2k). .2 is reserved in DHCP with a phony MAC for the win2k box. Same with .9 for the DHCP server, etc. When I look at the logs for the DHCP server, I see it handing out the correct address every time to the PDA. The only other odd thing is that this happens at random with the PDAs.
> 
> Jonathan Bailey
> Webmaster, Marshall County, Iowa
> E: jbailey at co.marshall.ia.us
> A: 1 E Main St, Marshalltown, IA 50158
> P: 641-844-2804
> C: 515-988-1021
> 
> ----- Original Message -----
> From: "Jerry Heiselman" <jweida at gmail.com>
> To: "Central Iowa Linux Users Group" <cialug at cialug.org>
> Sent: Tuesday, May 8, 2007 9:06:24 AM (GMT-0600) America/Chicago
> Subject: Re: [Cialug] Slightly OT- Windows Mobile grabbing random IPs..
> 
> On 5/8/07, Jonathan C. Bailey <jbailey at co.marshall.ia.us> wrote:
> It's slightly OT, but here goes... We have a set of 3 Windows Mobile
> PDAs (iPaqs - don't know which model) that will send a DHCP request,
> get a response, and then decide on an IP of their choosing randomly.
> The DHCP server runs on .9, the IP they commonly choose (another
> server) is on .2 and the PDAs are "statically assigned" via DHCP to
> .138, .139, and .221. The issue isn't just with the .221 PDA, but with
> all 3 - anyone else see this before? The DHCP server is just a Debian
> box and nothing special.
> >
> > Jonathan Bailey
> > Webmaster, Marshall County, Iowa
> > E: jbailey at co.marshall.ia.us
> > A: 1 E Main St, Marshalltown, IA 50158
> > P: 641-844-2804
> > C: 515-988-1021
> >
> > _______________________________________________
> > Cialug mailing list
> > Cialug at cialug.org
> > http://cialug.org/mailman/listinfo/cialug
> >
> 
> I think I'm missing something.  They are grabbing IPs from the wrong
> DHCP server or they are grabbing random IPs from the reserved pool?
> 
> If they are getting IPs from the wrong DHCP server, then they are just
> going with which ever server responded first to their DHCP DISCOVER
> packet.  If they are grabbing a random IP from their reserved pool,
> then I don't understand what the problem is.  That sounds like what
> they are suppose to do.
> 
> --
> Jerry H
> jweida [-at-] gmail [-dot-] com
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