[IPV6]: Export in6addr_any for future use.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

include/linux/in6.h

@@ -44,10 +44,8 @@ struct in6_addr
  * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
  * in network byte order, not in host byte order as are the IPv4 equivalents
  */
-#if 0
 extern const struct in6_addr in6addr_any;
 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
-#endif
 extern const struct in6_addr in6addr_loopback;
 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
 

net/ipv6/addrconf.c

@@ -209,9 +209,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
 };
 
 /* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
-#if 0
 const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
-#endif
 const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
 
 static void addrconf_del_timer(struct inet6_ifaddr *ifp)