[Dnsmasq-discuss] dhcpv6 duid gen

[Simon Kelley]

On 29/02/12 23:26, Vladislav Grishenko wrote:
> Little additions:
>
>> Allowing to specify from options would be useful too, eg. for multiple
>> dnsmasq instances
>
> Per RFC3315 "A DHCP client that generates a DUID-LLT using this (using sort
                       ^^^^^^^

> of time source) mechanism MUST provide an administrative interface that
> replaces the existing DUID with a newly-generated DUID-LLT."
>
>

 >> Hmm, I wonder if
 >> "stop dnsmasq, edit /var/lib/misc/dnsmasq.leases, start dnsmasq"
 >> counts as an administrative interface?

 > sure doesn't. in embedded there's no persistent storage for such
 > files other than /tmp, so under some circumstances file can be lost > 
 > (reboot, fast reinit, etc).
 > due hashing, there's a kind of guarantee that dhcpv4 client will get 
 > his leases back, but not for dhcpv6 guid.


I wonder if the solution might be to just have a

duid-override = <enterprise number>, <hex data>

configuration which suppresses storing anything in the lease file  and 
just uses a type-2 DUID in the obvious way?

Cheers,

Simon.