Dec
06
2015
There are some companies that have just started to dual stack (IPv4 & IPv6) their infrastructure, like twimg (the twitter hosting images site).
Reminder that IPv6 is preferable on the Internet (by design)
query[AAAA] pbs.twimg.com from 192.168.1.4
pbs.twimg.com to xxx.xxx.xxx.xxx
reply pbs.twimg.com is
reply ipv6.twimg.com is 2606:1f80:a000:102::2
reply ipv6.twimg.com is 2606:1f80:a000:106::2
reply ipv6.twimg.com is 2606:1f80:a000:105::2
reply ipv6.twimg.com is 2606:1f80:a000:107::2
reply ipv6.twimg.com is 2606:1f80:a000:104::2
reply ipv6.twimg.com is 2606:1f80:a000:100::2
reply ipv6.twimg.com is 2606:1f80:a000:101::2
reply ipv6.twimg.com is 2606:1f80:a000:103::2
query[A] pbs.twimg.com from 192.168.1.4
cached pbs.twimg.com is
forwarded pbs.twimg.com to xxx.xxx.xxx.xxx
reply pbs.twimg.com is
reply ipv6.twimg.com is 104.244.43.103
reply ipv6.twimg.com is 104.244.43.231
reply ipv6.twimg.com is 104.244.43.135
reply ipv6.twimg.com is 104.244.43.39
reply ipv6.twimg.com is 104.244.43.199
reply ipv6.twimg.com is 104.244.43.71
reply ipv6.twimg.com is 104.244.43.7
reply ipv6.twimg.com is 104.244.43.167
but twitter itself, doesnt support IPv6 !
query[AAAA] twitter.com from 192.168.1.4
forwarded twitter.com to xxx.xxx.xxx.xxx
reply twitter.com is NODATA-IPv6
query[A] twitter.com from 192.168.1.4
forwarded twitter.com to xxx.xxx.xxx.xxx
reply twitter.com is 199.16.156.102
reply twitter.com is 199.16.156.70
reply twitter.com is 199.16.156.38
reply twitter.com is 199.16.156.6
So below is the result on IPv4 twitter that calls IPv6 twimg:
