[101318] in North American Network Operators' Group
Re: v6 subnet size for DSL & leased line customers
daemon@ATHENA.MIT.EDU (Randy Bush)
Sat Dec 29 00:27:30 2007
Date: Sat, 29 Dec 2007 14:26:28 +0900
From: Randy Bush <randy@psg.com>
To: Joel Jaeggli <joelja@bogus.com>
CC: nanog@merit.edu
In-Reply-To: <47754CDE.3010405@bogus.com>
Errors-To: owner-nanog@merit.edu
> It plausible that if one were to assign a single /64 and reserve a 56 to
> delegate per customer
as a provider, where is the win in this for me? the space is 'lost',
i.e. committed, and i increase provisioning hassles, though maybe mildly
if i am skillful. if/when the rirs sober up about ipv6 justification, i
will have a hard time showing an hd ratio without a lot of zeros to the
immediate right of the decimal point.
or would you suggest that i recover the committed space if unused?
under what conditions? after how long? and, when i recover, do i
allocate the second (or 42nd) /64 to a new customer, leaving them a
smaller cushion than the first user of that /56 received?
no easy answers. but yes, giving them a /56 off the bat feels a bit
reminiscent of giving them a /24 in ipv4.
randy
