Dear Roy,

Am 05.06.2018 um 13:34 schrieb Roy Marples:
> On 04/06/2018 11:49, Roy Marples wrote:
>> These problems are very nicely solved with RFC 6355 which adds DUID-UUID 
>> where UUID is taken from the hosts firmware. The UUID can then be displayed 
>> on the node alongside the MAC address for provisioning.
>> The downside is that no client I know of supports this and I keep meaning to 
>> add support to dhcpcd for it.
>> The other downside is that not all hosts have a retrievable UUID as it 
>> depends on both the OS and host itself - for example some OS's present a 
>> UUID based on the CPUID. Of course this only works if all OS's generate the 
>> same UUID from the base data.
> I've just implemented DUID-UUID for dhcpcd.
> Patch here:
> Tested on NetBSD, OpenBSD, FreeBSD and Linux.
> Unsure how to get system-uuid for Solaris or QNX at this time, which are the 
> only other platforms dhcpcd works on (but isn't as well supported).

I finally managed to test this in my testing setup - it works perfectly fine! 
Could you let me know once it's integrated upstream? I plan to open issues for 
dhclient, systemd-networkd etc. then and could reference that RFC6355 is 
already handled fine
in a very portable way on a wide range of OS by dhcpcd. 

In a later step, I'll then ping the debian-installer and kickstart developers, 
since they should also adopt this (I think they use dhclient, but I may be 

It's nice to see that dhcpcd is first on this :-). 

All the best and many thanks,

> Roy
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