Some servers are not serving content over IPv6 HTTPS. It fails in such a way that most applications can't fall back to IPv4. tcp/443 is open but RST as soon as client sends TLS 1.2 client hello. It has been this way for 24+ hours.
>>> $ telnet 2600:1404:18::17d7:fbc 443 Trying 2600:1404:18::17d7:fbc... Connected to 2600:1404:18::17d7:fbc. Escape character is '^]'. Connection closed by foreign host > ncat -6 --ssl -v 2600:1404:18::17d7:fac 443 Ncat: Version 7.00SVN ( https://nmap.org/ncat ) Ncat: Input/output error. >>> www.apple.com. 681 IN CNAME www.apple.com.edgekey.net. www.apple.com.edgekey.net. 11306 IN CNAME www.apple.com.edgekey.net.globalredir.akadns.net. www.apple.com.edgekey.net.globalredir.akadns.net. 1664 IN CNAME e6858.dscc.akamaiedge.net. e6858.dscc.akamaiedge.net. 5 IN AAAA 2600:1404:18::17d7:fac e6858.dscc.akamaiedge.net. 5 IN AAAA 2600:1404:18::17d7:fbc > 2600:1404:18::17d7:0/112 serves www.apple.com, download.microsoft.com etc. >>> HTTP does work $ wget http://www.apple.com --2016-07-25 03:09:17-- http://www.apple.com/ Resolving www.apple.com (www.apple.com)... 2600:1404:18::17d7:fbc, 2600:1404:18::17d7:fac, 23.11.55.206 Connecting to www.apple.com (www.apple.com)|2600:1404:18::17d7:fbc|:80... connected. HTTP request sent, awaiting response... 200 OK >>> $ dig whoami.akamai.com +short whoami.akamai.net. 72.183.81.39 Thanks. Yang