nanog mailing list archives
IPv4 Mismanagement
From: Matt Hoppes <mattlists () rivervalleyinternet net>
Date: Fri, 2 Oct 2020 13:58:36 -0400
I'm sitting here in the office on a Friday performing some IP maintenance and I see that one of our upstreams is still filtering an IP range we haven't used in years. I dig into it a bit more and it turns out a major carrier still has them SWIPed to us.
This got me curious and I dug more into IPs from back in our early days and discovered there are two Tier-1 carriers we no longer do business with that still have large blocks of their own IPs SWIPED and allocated to us.
This is really confusing and concerning. I know it's not the end-all-be-all, but I wonder how much IPv4 exhaustion is being caused by this type of IPv4 mis-management, where IPs are still shown as "allocated" to a customer who hasn't used them in years.
I've seen this behavior from Frontier and CenturyLink to name just a few. Any thoughts on this?
Current thread:
- IPv4 Mismanagement Matt Hoppes (Oct 02)
- Re: IPv4 Mismanagement Matt Brennan (Oct 02)
- Re: IPv4 Mismanagement Ryan Wilkins (Oct 02)
- Re: IPv4 Mismanagement Justin Streiner (Oct 02)
- Re: IPv4 Mismanagement Wayne Bouchard (Oct 03)
- Re: IPv4 Mismanagement Tom Hill (Oct 05)
- Re: IPv4 Mismanagement Justin Streiner (Oct 05)
- Re: IPv4 Mismanagement Ryan Wilkins (Oct 02)
- Re: IPv4 Mismanagement Matt Brennan (Oct 02)