nanog mailing list archives
Re: 2600:: No longer pings
From: Tomáš Holý <holy () interconnect cz>
Date: Sun, 7 Apr 2024 13:12:21 +0200
I'd be just as gutted if they ever pull the plug on ipv6.google.com <http://ipv6.google.com/> - it's my go-to "first attempt" for an IPv6 test. :-) But this got me curious, so I grabbed a list of prefixes from [1] and decided to ping them all. Since I went through all that effort, might as well share the findings: $ for i in `cat list.txt`; do fping -6 $i -t 500 -r 0; done | grep 'is alive' 2409:: is alive 2a09:: is alive 2a11:: is alive 2a12:: is alive [<- 2a14:7:ffff::2]2a14:: is alive [1] https://www.iana.org/assignments/ipv6-unicast-address-assignments/ipv6-unicast-address-assignments.xhtml Tomas
6. 4. 2024 v 12:00, Ben Cartwright-Cox via NANOG <nanog () nanog org>: It appears that 2600:: no longer responds to ICMP. $ mtr -rwc 1 2600:: Start: 2024-04-06T10:53:41+0100 HOST: metropolis Loss% 1.|-- lcy02.flat.b621.net 0.0% [...] 6.|-- ldn-b4-link.ip.twelve99.net 0.0% 7.|-- ldn-bb1-v6.ip.twelve99.net 0.0% 8.|-- nyk-bb2-v6.ip.twelve99.net 0.0% 9.|-- ??? 100.0 10.|-- sprint-ic301620-nyk-b5.ip.twelve99-cust.net 0.0% 11.|-- ??? 100.0 This seems to have happened around Friday 5th 13:40 UTC. 2600::, a IP address owned by the Sprint network (Now since acquired by Cogent Communications) is a common (at least in my circles) IPv6 testing address, in a similar way that 8.8.8.8 or 1.1.1.1 is for a quick address to remember that always pings, when such a address is so easy to remember, you sometimes cannot help it becoming a "core project" :) ( https://xkcd.com/1361/ ) 2600:: is also used to be the address of sprint.net, now sprint.net has no v6. This is sad, and I would either propose that Cogent/Sprint (I assume 2600:: is under the ownership of Cogent now) revive this address as it's a very helpful testing address that is burned into the minds of many. Or at the very least, I'm more than willing to tank the effort of responding to ICMP!
Current thread:
- 2600:: No longer pings Ben Cartwright-Cox via NANOG (Apr 06)
- RE: 2600:: No longer pings Soha Jin (Apr 06)
- Re: 2600:: No longer pings Stephane Bortzmeyer (Apr 06)
- Re: 2600:: No longer pings Gaurav Kansal via NANOG (Apr 06)
- Re: 2600:: No longer pings Stephane Bortzmeyer (Apr 07)
- Re: 2600:: No longer pings Tomáš Holý (Apr 07)
- Re: 2600:: No longer pings Stephane Bortzmeyer (Apr 07)
- Re: 2600:: No longer pings Ben Cartwright-Cox via NANOG (Apr 10)
- Re: 2600:: No longer pings Randy Bush (Apr 14)
- RE: 2600:: No longer pings Soha Jin (Apr 06)