ipv4 05/05: add sysctl to accept packets with local source addresses

commit 8ec1e0ebe26087bfc5c0394ada5feb5758014fc8
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:16:35 2009 +0100

    ipv4: add sysctl to accept packets with local source addresses

    Change fib_validate_source() to accept packets with a local source address when
    the "accept_local" sysctl is set for the incoming inet device. Combined with the
    previous patches, this allows to communicate between multiple local interfaces
    over the wire.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 989f5538b8dd..006b39dec87d 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -731,6 +731,12 @@ accept_source_route - BOOLEAN
         default TRUE (router)
                 FALSE (host)
 
+accept_local - BOOLEAN
+        Accept packets with local source addresses. In combination with
+        suitable routing, this can be used to direct packets between two
+        local interfaces over the wire and have them accepted properly.
+        default FALSE
+
 rp_filter - INTEGER
         0 - No source validation.
         1 - Strict mode as defined in RFC3704 Strict Reverse Path