Problem with chillispot and dhcp relay

[David Bird]

That's great. Thanks for testing! I'm happy to have chilli work with
more environments and now supports a DHCP relay. With regard to the
ICMP duplicate packets... I think it could be the fact that the OS is
replying to the ping from both the dhcpif _and_ the tun interfaces.
With your installation, are you running the supplied configuration
with the ip up/down scripts (which setup your firewall for chilli)?
I'll try to reproduce the problem...

Thanks again.
David

On 9/8/07, Lai Zit Seng <lzs at pobox.com> wrote:
> Ok, was too eager to try the svn update so I came back to test anyway.
> Your latest update works great! Thanks. Especially since I imagine my
> DHCP relay configuration is rather unusual :)
>
> May I bug you with one more item. This is not show stopper but
> nevertheless something that bothers me. I can ping across chillispot
> just fine. But if the clients ping chillispot IP itself, they get
> duplicate replies. I.e. 1 echo-request, 2 echo-replies come back. This
> is the case for both wired and wireless clients (so it is not a
> quirkness of the WLC in my environment).
>
> The tcpdump at the client, chillispot's tun interface and chillispot's
> dhcpif interface shows the duplicate echo-replies. The tun interface
> capture does show something odd: There is actually an echo-reply going
> out first, then the echo-request in, then echo-reply out. I can send the
>
> I can send you the tcpdump if needed :)
>
> Regards,
>
> .lzs
>
> ps: Copying back to mailing list.
>
> On 9/8/07 1:30 AM, David Bird wrote:
> > Thanks,
> >
> >  From a quick review, I think my (and the current svn) version does
> > roughly the same thing. Though, I think mine is a little cleaner in that
> > I moved the call to dhcp_getreq() up above the newconn() in the
> > receive_ip method. And, it returns out of receive_ip -- since the
> > request has actually already been replied to. The newconn() method is
> > also called from within dhcp_getreq() - and I instantiate the connection
> > with the chaddr in the event of a relay. I look forward to hearing how
> > the current snapshot does in your environment.
> >
> > David
>
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