[U-Boot-Users] Duplicate IP address check

[gvb.uboot <gvb.uboot@gmail.com>]

Ben Warren wrote:
> Hi Dan,
> 
> Dan Batryn wrote:
>> Due to a mis-configuration of our DHCP server there was an
>> overlapping range of DHCP assigned IP address and units configured
>> to have IP addresses statically assigned.  I was surprised to find
>> that UBOOT did not complain of a duplicate IP address while trying
>> to boot via the network.  Looking through the source I cannot see
>> any code to perform the typical ARP for yourself check that I have
>> seen before.  Could someone please tell me if I have overlooked
>> something or is this feature missing?
>>
>>   
> There is no explicit check for duplicate IP assignment. U-boot's 
> networking code is intentionally minimalist and thus lacks many such 
> features. Feel free to provide a patch and a convincing argument of why 
> it's needed.
> 
> regards,
> Ben

Ditto on the patch.

WRT the convincing argument, I think the bar would be *really* low on 
this one. :-)  I would consider a convincing argument to be "The nearly 
universal convention of performing an ARP to verify that the 
DHCP-assigned IP address is unused is missing."

Best regards,
gvb