1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 6f896b94abdc..99d0e0504d6e 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -862,6 +862,11 @@ accept_local - BOOLEAN
         local interfaces over the wire and have them accepted properly.
         default FALSE
 
+route_localnet - BOOLEAN
+        Do not consider loopback addresses as martian source or destination
+        while routing. This enables the use of 127/8 for local routing purposes.
+        default FALSE
+
 rp_filter - INTEGER
         0 - No source validation.
         1 - Strict mode as defined in RFC3704 Strict Reverse Path