[ppml] Proposed Policy: PI assignments for V6
da Silva, Ron
rdasilva at va.rr.com
Thu Dec 9 10:23:39 EST 2004
> so, i guess that the right thing to do would be to assign a /48 to
> mobile phone, right?
> since RFC 3177 states that:
> - /48 in the general case, except for very large subscribers.
> - /64 when it is known that one and only one subnet is needed
> - /128 when it is absolutely known that one and only one
> is connecting.
> and since we cannot be sure that a mobile phone will have a single
> subnetwork behind, i guess that the /48 would be the proper choice
> I am sorry but i think this is a huge waste.
> For the time being, most of mobile phones will not have a manet
> not one not many subnetworks. I think there must be something very
> wrong if we assign a /48 to each mobile phone
>From a wireline connectivity perspective, the /48 would be assigned to
the provider gateway (e.g. DSL/Cable router). Any subnets downstream of
that connection would be allocated from the /48 pool. If there was a
device within the home (say a multi-modal handset with 802.11x, GSM and
bluetooth) that needed a prefix (or two) for additional subnetting then
there should be a mechanism to allocate multiple /64's to that device
from the /48.
For consistency, can someone extend that concept to a GSM/CDMA
connectivity model? Where is the /48 assigned? Presumably, whatever
gateway device is being employed for assigning IPv6 addresses to
handsets would be assigned the /48 and then any further delegation would
be accomplished with downstream /64 assignments.
Anyone have any URL's that detail current IPv4/IPv6 addressing plans for
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