code: def in6_isaddrTeredo(x):
      
      our = inet_pton(socket.AF_INET6, x)[0:4]
      teredoPrefix = inet_pton(socket.AF_INET6, conf.teredoPrefix)[0:4]
      return teredoPrefix == our
docs: Return True if provided address is a Teredo, meaning it is under
      the /32 conf.teredoPrefix prefix value (by default, 2001::).
      Otherwise, False is returned. Address must be passed in printable
      format.