[En-Nut-Discussion] Problem with DHCP

[Ulrich Prinz]

Hi!

Thanks, for beeing active in that area. I discovered, that the DHCP is 
not the Problem in the latest EIR software. It simply dies cause the 
system dies elswhere.

But there are different problems in the DHCP system. I try to resume 
from my mind...

I had a system configured for a class B network by dhcp. It got an 
address like 10.201.49.129/255.255.0.0
Then I plugged it into the voip network and did not get a new address. 
It tried for hours before I got back to the system and checked it's ip.

To solve the problem quickly I simply used a second setup that never got 
an ip as it was used for another project. It was configured by dhcp 
without a problem.

Then we needed several systems in a network and all of them that never 
where set up by dhcp where working, from the others only the ones, that 
already had an address from that network. None of them could be 
connected to another network again. So I implemented a quick hack as 
these systems ha buttons and a display. So I added a menu point for 
reflashing the netconf sector to 0xFF. After rebooting it starts and 
uses dhcp without a problem.

I hope, that these information may help you. If you have any things to 
test, just pass the code over and I try it.

Best regards, Ulrich

Michael Jones schrieb:
> Ulrich Prinz Wrote:
> 
>> Hi!
>> I am using some Nut/OS based systems that need to work in different 
>> networks with DHCP. Some of them are moved several times a week into 
>> totally different networks.
>> Every time the DHCP reassign of the saved address fails, as the network 
>> is a different one, the device hangs inside the dhcp routines.
>> A quick hack was to erase the saved address from the network settings. 
>> Therefore I use a button that is checked on power-up and if it is 
>> pressed the saved dhcp settings are erased. But that should not be the 
>> solution. AFAIK the process fails at the point, where the DHCP get a 
>> NACK from the dhcp server after trying to get the saved address reassigned.
>> Did someone already change that procedure and can provide some modified 
>> code?
>>
>> Best regards, Ulrich
> 
> Hi,
> I'm currently investigating some network related issues and the behavior you
> described above it one of them. The current schedule suggests that this will
> be solved within the next two weeks...
> 
> Cu,
> Michael
> 
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