[Dnsmasq-discuss] DHCPv6 with dnsmasq for automated deployments

[Oliver Freyermuth]

Dear dnsmasqers,

I fear the following is a design issue of DHCPv6, but I wonder if there's a way to overcome it with dnsmasq... 

When automatically deploying machines via PXE / network installer, there's usually first a DHCPv6 client running in the installer,
and afterwards (when the machine is installed) the "real" DHCPv6 client running on the machine. 
Naturally, both will usually have different client DUIDs... 

Using dnsmasq's functionality to perform DHCPv6 address assignment based on MAC address,
this works fine for the first client, but the second DHCPv6 client will not get an address until the old lease is expired. 

In general, I feel this is the correct behaviour, but it's of course rather inconvenient when deploying machines automatically - 
they will retrieve an IPv6 address with the network installer, and then not get one after the first reboot. 
Also, when reinstalling them, they will not get an address in the installer if the lease from their "old life" is still valid. 

Does somebody have a good solution for this? 
Is there something like "id:*" for IPv4 implemented for the IPv6 world (i.e. something like "duid:*")? 

Cheers and all the best,
	Oliver