On 2017-12-21 08:58, Christopher Morrow wrote:
On Thu, Dec 21, 2017 at 10:16 AM, Jason Iannone <jason.iann...@gmail.com>
wrote:
M&A plays into this too. By my calculations, CenturyLink controls at
least 17 million /48s. How many sites does CenturyLink provide
service to? I'm gonna go out on a limb and say it's not 17 million.
there are less than 17m households served by centurylink's residential
product? really?
each of those could be considered a site and then get a /48.
Speaking non-hypothetically, there's some shoddy network address
management at play there. I can state for a fact that there's at least
one /48 (and I imagine many more) in Jason's list that hasn't been valid
for over three years. The IPv4 side of that circuit (a /25) is also
still SWIP'd -- not that it's meaningfully usable in the DFZ.
Therein lies a (minor, I hope) flaw in Job Snijders' proposal to use
ARIN OriginAS data for determining routing authorization: ISPs have to
not suck at cleaning up SWIP entries for dormant circuits. I (as a
customer) tried to get my employer's entries removed three months ago,
but no one cared enough to follow up.
(Also, I doubt the vast majority of CenturyLink's residential customer
base a) has non-tunneled IPv6 or b) receives a /48.)
If anyone from AS209 wants to clean up those SWIPs, they're welcome to
ping me off-list. :-)
- Jima
