nanog mailing list archives
Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer...
From: Matthew Kaufman <matthew () matthew at>
Date: Thu, 10 Feb 2011 08:43:50 -0800
On 2/9/2011 9:15 PM, Ricky Beam wrote:
On Wed, 09 Feb 2011 16:42:14 -0500, Nathan Eisenberg <nathan () atlasnetworks us> wrote:What do you mean, lit up? You mean they're not in the routing tables that you get from your carriers? I'd argue that's no indication of whether they're in use or not.That's pretty much the definition of "in use". If they don't appear in the global routing table, then they aren't being used.
There is no one universal "global routing table". They probably appear in someone's routing table, somewhere... just not yours.
If Cogent stops peering with you (I picked them, because that's not out of the question) and you stop seeing all their downstream routes, did those addresses suddenly become available for reassignment?
I cannot send traffic to them; they cannot send traffic to me.
That's true of almost all addresses these days, what with firewalls and all.
In my recent probe of route servers, I found 22 legacy /8's that were partly or completely unused. I'm a little surprised ARIN/ICANN thinks it's a waste of time to even try to reclaim them.
How many days do you think a single /8 lasts at current assignment rates?How would ARIN/ICANN go about reclaiming addresses that someone believes they are using but that you don't think are in use?
Matthew Kaufman
Current thread:
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer..., (continued)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Jason Fesler (Feb 09)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Mark Andrews (Feb 09)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Matthew Moyle-Croft (Feb 09)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Valdis . Kletnieks (Feb 09)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Owen DeLong (Feb 09)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... David Conrad (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Henk Uijterwaal (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Cutler James R (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Joel Jaeggli (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Matthew Kaufman (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Jack Bates (Feb 10)
- RE: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... George Bonser (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Scott Helms (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Alexander Harrowell (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 11)
- RE: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... George Bonser (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Jack Bates (Feb 11)
- RE: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Frank Bulk (Feb 13)