Test whether a web address, site, URL, or domain is IPv6 accessible. Tests for DNS AAAA records, IPv6-addressable nameservers, glue, IPv6 connectivity (port 80), and several other elements. https://Ready.Chair6.net/?url=g2Pro.kr/bbs/board.php%3Fbo_table%3Dfree%26wr_id%3D400825