dhcpd trouble shooting utilities

[Colin Law]

On 19 November 2012 18:36, Gene Heskett <gheskett at wdtv.com> wrote:
> Greetings;
>
> I gave the missus a Nook Color a year ago for Christmas, set it up to
> access my AP here in the house & even bought a book at the time.
>
> But then, since she uses the crossword generator in it more than anything
> else, I disabled the radio to save on the battery life, which w/o the radio
> can be a couple weeks.
>
> But, I turned the radio back on, and while the nookcolor does appear to
> negotiate the WPA2-PSK password stored just fine, but then reports that
> dhcp is running forever.
>
> So my question is, do we have any tools to analyze the dhcpd traffic and
> show me whats wrong?  AFAIK its working for my lappy, but it, from where it
> normally lives in the shop, would be coming in thru another wirelass AP in
> the shop, so its requests for dhcp service would actually be coming into
> what I think is the only active server here via the routers WAN port, not
> the radio.
>
> There is so much to know about this its easy to lose track of the tree in
> all this forest of networking stuffs.  I suspect that somehow, in
> attempting to improve the caching of dns lookups on this, the main machine,
> and have somehow managed to have it issuing a dhcpd response that clashes
> with the intended server in this router/AP.

I have had situations where messages displayed made it look as if it
was failing at the dhcp stage but actually it was not getting a good
connection in the first place.  Try configuring it with a fixed ip
address.  That will confirm (or otherwise) that it is dhcp that is
failing.

Colin

>
> But I need to tool to analyze this.
>
> Thanks folks.
>
> Cheers, Gene
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> My web page: <http://coyoteden.dyndns-free.com:85/gene> is up!
> Nothing cures insomnia like the realization that it's time to get up.
>
> --
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users