[178207] in North American Network Operators' Group
v6 deagg
daemon@ATHENA.MIT.EDU (Randy Bush)
Thu Feb 19 22:07:50 2015
X-Original-To: nanog@nanog.org
Date: Fri, 20 Feb 2015 12:07:44 +0900
From: Randy Bush <randy@psg.com>
To: North American Network Operators' Group <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
in a discussion with some fellow researchers, the subject of ipv6
deaggregation arose; will it be less or more than we see in ipv4?
in http://archive.psg.com/jsac-deagg.pdf it was thought that
multi-homing, traffic engineering, and the /24 pollution disease were
the drivers. multi-homing seems to be increasing, while the other two
were stable as a relative measure to total growth.
so, at first blush, we thought v6 would be about the same as v4.
but then we considered that v6 allocations seem to be /32s, and the
longest propagating route seems to be /48, leaving 16 bits with which
the deaggregators can play. while in v4 it was /24s out of a /19 or
/20, four or five bits.
this does not bode well.
randy
