Re: [lwip-users] DHCP Lockup

[Bill Lawson]

Sorry for the increase in traffic.  I just wanted to add a bit of extra 
information.

I stopped called dhcp_fine_tmr() and dhcp_coarse_tmr() to see what 
effect that would have, and now dhcp_start() and dhcp_stop() return as 
expected.  dhcp_start() will not make multiple calls to dhcp_discover() 
in this state, but since I can restart the process  manually that isn't 
a huge problem.

I would still like to know what the problem is, if anyone has any ideas.

--Bill

Bill Lawson wrote:

> Does anyone know what could cause dhcp_start() and dhcp_stop() to 
> never to return?
>
> I can call dhcp_start() once, and if I get an offer immediately 
> everything is fine.  However, I only send one discover message.  If I 
> don't get a reply to that message nothing more happens.
>
> I've tried calling dhcp_stop() (after a timeout) so that I can restart 
> the transaction, but dhcp_stop() never returns.  I've tried calling 
> dhcp_start() again without stopping it first but the second call to 
> dhcp_start never returns.
>
> Does anyone have any idea why this might occur?
>
> Thanks,
> Bill