This is what's new and changed in the c-ares 1.7.1 release:

Changed:

 o added IPv6 name servers support

Fixed:

 o closing of sockets on Windows systems
 o MSVC deprecated compiler options warnings
 o ares_process_fd() didn't check broken connections

Thanks go to these friendly people for their efforts and contributions:

 Ingmar Runge, Laszlo Tamas Szabo, Yang Tse, Tommie Gannert, Gregor Jasny,
 Phil Blundell, Cedric Bail, Jakub Hrozek

Have fun!