nanog mailing list archives

Re: ISP customer assignments


From: Mark Andrews <marka () isc org>
Date: Wed, 14 Oct 2009 12:38:40 +1100


In message <op.u1rnahbbtfhldh () rbeam xactional com>, "Ricky Beam" writes:
On Tue, 13 Oct 2009 09:33:03 -0400, Justin Shore <justin () justinshore com>  
wrote:
He didn't really give much of a reason for the /127s yet.  I think it's  
coming up in a later session.  I think it basically boiled down to  
whether or not the customer would actually use anything bigger.  I'll  
write back when we get into that discussion.

It's the IPv6 equiv of an IPv4 /30 link network.  Then a /64 or whatever  
can be aimed to that link address.  This is exactly what Bellsouth does  
for business DSL: the link has a dynamic address and your netblock is then  
routed to it. (this is confusing and unworkable for a lot of cheap  
hardware.)

Just use a /64 for the customer link.  That allows them to have a CGA if
they need one.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org


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