ipv6: expose RFC4191 route preference via rtnetlink

This makes it possible to retain the route preference when RAs are handled in
userspace.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index c3722b024e73..bea910f924dd 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -305,6 +305,7 @@ enum rtattr_type_t {
         RTA_MFC_STATS,
         RTA_VIA,
         RTA_NEWDST,
+        RTA_PREF,
         __RTA_MAX
 };