[arin-ppml] V6 address allocation policy
mysidia at gmail.com
Wed Jan 20 08:50:26 EST 2010
On Wed, Jan 20, 2010 at 3:28 AM, <michael.dillon at bt.com> wrote:
> I don't believe in redefining the English language. A site, is what the
> dictionary says, regardless of how it is connected to the Internet. ---
The word "end site" in no way implies a single physical location any
more than the term "web site" implied a single physical location, or
that the term "web farm" suggests an actual farm with webservers
installed in the barn, to keep the animals company; the dictionary
is for providing common-use definitions only. The dictionary
does not answer for technical or subject-matter-specific definitions
like the IPv6-specific word "end-site"
It's the intent of the design, and good technical practice that matter.
The usage of "End site" in IPv6 documents has a very similar
meaning to the word "autonomous system" or what ARIN NRPM calls an
"end user network".
"End site" doesn't mean "physical place"... it means
"IP-specific site", as in the logical presence in the IPv6
address space created by that end-user's network.
NRPM has already done that:
"2.10. End site
An end site is defined as an end user (subscriber) who has a business
relationship with a service provider that involves:
1. that service provider assigning address space to the end user
2. that service provider providing transit service for the end user
to other sites
3. that service provider carrying the end user's traffic.
4. that service provider advertising an aggregate prefix route that
contains the end user's assignment
> It is common for companies with several sites to have them all connected
> to the Internet via a gateway at a central site. Nevertheless, it would
> be ridiculous for ARIN to treat this a single site.
It's not that ridiculous.
It is probably more ridiculous to suggest that each of one end user
network's physical locations really needs an additional /48
I believe /48 is selected on the assumption that all the end
user's subnets would be taken from their one /48.
If each physical location receives its own allocation, then there's
really no reason to pick /48 over /56. A large number of
subnets at a single physical location is quite rare.
Whereas, there are very good reasons to assign an end-site a /48
if that end-site comprises many geographic locations, then a large
number of subnets is likely
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