Test your IPv6 connectivity

[rcjordan]

http://test-ipv6.com/

[Mackin USA]

TWC

Test with IPv4 DNS record         
ok (0.200s) using ipv4
Test with IPv6 DNS record         
ok (0.166s) using ipv6
Test with Dual Stack DNS record         
ok (0.355s) using ipv6
Test for Dual Stack DNS and large packet         
ok (0.162s) using ipv6
Test IPv4 without DNS         
ok (0.335s) using ipv4
Test IPv6 without DNS         
ok (0.312s) using ipv6
Test IPv6 large packet         
ok (2.636s) using ipv6
Test if your ISP's DNS server uses IPv6         
bad (0.511s)
Find IPv4 Service Provider         
ok (0.664s) using ipv4 ASN 11426
Find IPv6 Service Provider         
ok (0.448s) using ipv6 ASN 11426

[rcjordan]

TWC (130 miles east of Mackin. Same state)

Test with IPv4 DNS record       
ok (0.274s) using ipv4
Test with IPv6 DNS record       
bad (0.101s)
Test with Dual Stack DNS record       
ok (0.367s) using ipv4
Test for Dual Stack DNS and large packet       
ok (0.294s) using ipv4
Test IPv4 without DNS       
ok (0.251s) using ipv4
Test IPv6 without DNS       
bad (0.072s)
Test IPv6 large packet       
bad (0.191s)
Test if your ISP's DNS server uses IPv6       
timeout (11.122s)
Find IPv4 Service Provider       
ok (0.444s) using ipv4 ASN 11426
Find IPv6 Service Provider       
bad (0.146s)

[rcjordan]

picked it up from this reddit thread

Fix Lollipop wifi issues (and coincidentally the Facebook app) by disabling ipv6

http://www.reddit.com/r/Android/comments/2z1gyo/fix_lollipop_wifi_issues_and_coincidentally_the/

[Torben]

I still haven't heard anybody say anything clever about IPv6 and SEO. Until Google starts to give IPv6 sites a boost the safest bet is to stay on IPv4. If it ain't broken...