待って。いつの間にか家から弊ぼっちにIPv6でリクエストを送れるようになってた。のはIPv4-mapped IPv6 addressか← $ curl -6v https://mastodon.zunda.ninja * Host mastodon.zunda.ninja:443 was resolved. * IPv6: ::ffff:35.71.131.46, ::ffff:3.33.148.61, ::ffff:13.248.241.119, ::ffff:13.248.144.105 * IPv4: (none) * Trying [::ffff:35.71.131.46]:443... * Connected to mastodon.zunda.ninja (::ffff:35.71.131.46) port 443 : なお弊ぼっちからインターネットへはIPv6ではつながっていないのでIPv6オンリーのサーバさんたちとはやりとりできませんｽﾝﾏｾﾝ $ heroku run bash ~ $ curl -6v https://www.kame.net * Host www.kame.net:443 was resolved. * IPv6: 2001:2f0:0:8800:226:2dff:fe0b:4311, 2001:2f0:0:8800::1:1 * IPv4: (none) * Trying [2001:2f0:0:8800:226:2dff:fe0b:4311]:443... * Immediate connect fail for 2001:2f0:0:8800:226:2dff:fe0b:4311: Network is unreachable * Trying [2001:2f0:0:8800::1:1]:443... * Immediate connect fail for 2001:2f0:0:8800::1:1: Network is unreachable * Failed to connect to www.kame.net port 443 after 361 ms: Couldn't connect to server :