[ppml] Policy Proposal: IPv6 Assignment Guidelines

Jeroen Massar jeroen at unfix.org
Fri Aug 17 14:33:47 EDT 2007

Member Services wrote:
> LIR's may assign blocks in the range of /48 to /64 to end sites.
> All assignments made by LIR's should meet a minimum HD-Ratio of .25.
> * /64 - Site needing only a single subnet.
> * /60 - Site with 2-3 subnets initially.
> * /56 - Site with 4-7 subnets initially.
> * /52 - Site with 8-15 subnets initially.
> * /48 - Site with 16+ subnets initially.

I like the idea, but please don't make it too complex. The whole idea of
having a /48 "everywhere" was to make moving around and avoiding
renumbering at least the numberplan, easy.

As such, please only keep it to:
* /64 - Site really ever needing only a single subnet (eg a colo link).
* /56 - Site with a low number of subnets (eg a residential user)
* /48 - Site with a high number of subnets (eg a business/organization)

Though a /64 should IMHO *NEVER* be given to an endsite and only be used
in cases of colo facilities. If /64s are going to be made available to
ISPs for assignment to endusers one can be sure that they will be
playing the "IP addresses are expensive, if you need more IP addresses
you will need to buy the businesses package and thus pay loads of
money". ISPs should charge for bandwidth consumption, just like their
transits are charging them.

IMHO an ISP which is forcing users to get a business package aka pay a
much higher fee because the user requires more addresses/subnets than
provided normally, should be barred from any of the RIRs. Any ISP who is
able to fill up a /32 worth of users should easily be able to afford the
teeny bit of extra cost associated with getting a larger prefix from
their RIR. Thus I state again: charge for bandwidth usage, not for the
size of the prefix.

The /56 is perfect for residential sites aka Joe Average HomeUser.
The /48 should IMHO be provided to 'businesses' and other such

If this setup can be unified around the world, or at least in the RIRs
and ISPs adhere to it then the only tricky part of renumbering will be
keeping a list where one stores IP addresses, and then getting the first
couple of octets changed, at least one won't have to redesign the
network as one used a subnet which one now suddenly can't get anymore.


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