1 files changed, 9 insertions, 0 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 88efed0a533f..35aed1c6dd98 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -729,6 +729,15 @@ accept_ra_pinfo - BOOLEAN
         Functional default: enabled if accept_ra is enabled.
                             disabled if accept_ra is disabled.
 
+accept_ra_rt_info_max_plen - INTEGER
+        Maximum prefix length of Route Information in RA.
+
+        Route Information w/ prefix larger than or equal to this
+        variable shall be ignored.
+
+        Functional default: 0 if accept_ra_rtr_pref is enabled.
+                            -1 if accept_ra_rtr_pref is disabled.
+
 accept_ra_rtr_pref - BOOLEAN
         Accept Router Preference in RA.