[IPV6]: ROUTE: Add support for Router Preference (RFC4191).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index f925f206d8ff..c456ead8a4a3 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -38,6 +38,17 @@ config IPV6_PRIVACY
 
           See <file:Documentation/networking/ip-sysctl.txt> for details.
 
+config IPV6_ROUTER_PREF
+        bool "IPv6: Router Preference (RFC 4191) support"
+        depends on IPV6
+        ---help---
+          Router Preference is an optional extension to the Router
+          Advertisement message to improve the ability of hosts
+          to pick more appropriate router, especially when the hosts
+          is placed in a multi-homed network.
+
+          If unsure, say N.
+
 config INET6_AH
         tristate "IPv6: AH transformation"
         depends on IPV6