[strenholme]

Since I write a Lua-parsed DNS server which works with IPv6, even when compiled for an ancient version of MINGW on Windows XP (which has IPv6 support but no built-in IPv6 parser), I had to write an IPv6 address parser (no inet_pton(), which is what most programs use for IPv6 parsing, on that system).

No, I did not add dotted quad notation to the parser. No, you can not have more than four hex digits in a single quad; 00000001:2::3 is a syntax error. It supports “normal” stuff like ::, ::1, 2001:db8::1, and even non-normal stuff like “2001-0db8-1234-5678 0000-0000-0000-0005” (to be compatible with the really basic IPv6 parser I put in MaraDNS’s recursive resolver nearly two years ago), but does not support any of the IPv6 corner cases in the linked article.

The IPv6 test cases in the automated test for the parser are at: https://github.com/samboy/MaraDNS/blob/master/deadwood-githu... (The final three lines are supposed to return errors)