It occurred to me that the 1.10 NEWS file declares IPv6 to be supported. However, as far as I know, IPv6 doesn't work under Windows.
Though it seems that Winsock 2 (which mswindows.h is apparently trying to support) implements IPv6, I have a nagging suspicion that just including <winsock2.h> and defining HAVE_GETADDRINFO and ENABLE_IPV6 won't be enough[1]. So what does it take to support IPv6 under Windows? If this is not possible in the 1.10 time frame, we should probably note in NEWS that IPv6 is still not supported under Windows. [1] On the other hand, the 1.7 patch available at http://win6.jp/Wget/wget-1.7-win32-v6-20010716a-2.zip suggests exactly that.