DHCP PD best practise

Christian Kratzer ck-lists at cksoft.de
Sun Sep 16 06:46:13 UTC 2018

Gruezi Nico,

On Sat, 15 Sep 2018, Nico Schottelius wrote:

> Good evening,
> we are a small hosting / network provider in Switzerland and are running
> our infrastructure "IPv6 first" - aka only adding IPv4 where necessary
> and the core network is 100% IPv6 only.
> All of our hosting customers currently have 1 IPv6 address
> assigned and can request a /64 network, which we currently manually
> route to their VM.
> We are now considering an infrastructure revamp and would like to switch
> to more "standard techniques", like DHCP & DHCP PD.
> When looking at the ISC DHCPd, we see that there is PD support, however
> some things are rather unclear to us:
> - Given that you can trust the mac address (we can ensure that), how do
>  you ensure that a client can only request a certain number (1, 2, x?)
>  prefixes?
> - Similar: is there a way to grant clients access to a /64 or /48 (or
>  anything in between) defaulting to /64?
> - How does dhcpd ensure that a system is adding the respective route to
>  the client? If it is not dhcpcd, how is it commonly solved?
> - Does dhcpd have hooks? If yes, what kind of hooks are available and
>  how do we pass information to them?
> I hope we have not overseen the documentation parts for these questions,
> but if so, we would be happy if you point us to it.
> Best regards from the mountains,

with all what you are attempting to do you shold really consider swiching to KEA.

It should be able to do all you want and you will be more flexible.


Christian Kratzer                   CK Software GmbH
Email:   ck at cksoft.de               Wildberger Weg 24/2
Phone:   +49 7032 893 997 - 0       D-71126 Gaeufelden
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Mobile:  +49 171 1947 843           Geschaeftsfuehrer: Christian Kratzer
Web:     http://www.cksoft.de/

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