[Dnsmasq-discuss] Option 66 Bug?

[richardvoigt at gmail.com]

On Fri, Mar 26, 2010 at 3:54 PM, Dayton Turner <dayton at voxter.ca> wrote:
> I’ve tried doing that already (wireshark)
>
> Because its a phone making the request, I am not able to tcpdump on the
> phone, of course, and because the router has such little space, I am not
> able to get tcpdump on  to it.
>
> I did do a tcpdump while doing a dhcp request from my mac, and I do not see
> the option 66 packet in the response at all.  I’m not familiar enough with
> DHCP to know if there are conditions in which Option 66 is sent or not sent
> (does the DHCP requesting device have to ask the DHCP server for it?)

Do you have any PC with two NICs that you could use as a transparent
bridge + packet capture?  Windows since XP makes this really easy
(select two NICs, right-click, bridge connections), and Linux is
barely more difficult.  A fair number of motherboards come with dual
NIC these days, or you can try to wedge a laptop with wired and
wireless ethernet in between the phone and router somehow.