> For IPv6, we have chosen 2606:4700:4700::1111 and 2606:4700:4700::1001 for our service. It’s not as easy to get cool IPv6 addresses; however, we’ve picked an address that only uses digits.
For me up in Canada, ping 1.1.1.1 works. But
ping6 2606:4700:4700::1111
ping6 2606:4700:4700::1001
We also need to confirm IPV6 works outside AT&T's network.
Edit: Just tried Google's DNS. 8.8.8.8 works, but their IPv6 doesn't, so I guess this was a bad test.
Edit2: Learned about nslookup, but it does not seem to work with either Google or CloudFlare's DNS.
nslookup reddit.com # Works
nslookup reddit.com 1.1.1.1 # Works
nslookup reddit.com 1.0.0.1 # Works
nslookup reddit.com 2606:4700:4700::1111 # Does not
nslookup reddit.com 8.8.8.8 # Works
nslookup reddit.com 2001:4860:4860::8888 # Does not
nslookup reddit.com 2001:4860:4860:0:0:0:0:8888 # Does not
Okay, guess my PC/LAN/ISP doesn't support IPv6 yet.
Connecting to WiFi (Time Warner), I got a 403 from cloudflare (presumably there just isn't a web server set up on that address).
Using mobile data (AT&T), I got ERR_ADDRESS_UNREACHABLE. However, 1.1.1.1 actually works on AT&T cellular, so I'm not sure what to think.
(US based) frontier, vz, and spectrum all can ping that ipv6 address (though all have way over 10ms latency)
the nslookup reddit.com 1.1.1.1 does not return for me, if I connect to work via VPN it does. 1.0.0.1 and 8.8.8.8 do work without VPN. while the AT&T modem shows IPV6 I did not test.
System Information Type Value Manufacturer Pace Plc Model 5268AC
ping6 '[2606:4700:4700::1111]'I'm pretty sure the other end has to be running `pingd` to get a response from ping. Some do, some don't.
I might be wrong but that's always been my understanding.
What is unfortunately common though is people blocking ICMP at their firewall, either at the host level itself or further upstream. Sometimes they just block echo requests, but often they block ICMP entirely which breaks things in very weird ways from time to time.
Blocking ICMP in any way is generally to be considered harmful. It's not 1997 anymore, the "ping of death" is not a thing on any OS you should actually be connecting to the internet.