[ppml] Proposed Policy: PI assignments for V6
Stephen Sprunk
stephen at sprunk.org
Wed Dec 8 14:09:15 EST 2004
Thus spake "marcelo bagnulo braun" <marcelo at it.uc3m.es>
> so, i guess that the right thing to do would be to assign a /48 to each
> 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 by
> design.
> - /128 when it is absolutely known that one and only one device
> 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 behind,
> not one not many subnetworks. I think there must be something very wrong
> if we assign a /48 to each mobile phone
Do mobile phones even count as an "assignment"? i.e. will ISPs be assigning
a static prefix to each customer, regardless of location, and putting SWIP
info in WHOIS? I admit I'm not familiar with what the telcos are planning,
but this seems ridiculous.
I would expect each cell tower (or whatever the logical unit is) to be
assigned a /64, and phones would be individual hosts with addresses provided
by DHCP or autoconfiguration. If a phone allowed hosts behind it, they
could be bridged into that same subnet.
S
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking
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