From c801e3cc1925e02fa7213889306d4d77e6ad1550 Mon Sep 17 00:00:00 2001 From: "David S. Miller" <davem@davemloft.net> Date: Sat, 30 Jun 2012 22:39:27 -0700 Subject: [PATCH] ipv4: Clarify in docs that accept_local requires rp_filter. Signed-off-by: David S. Miller <davem@davemloft.net> --- Documentation/networking/ip-sysctl.txt | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 99d0e0504d6e..47b6c79e9b05 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -857,9 +857,14 @@ accept_source_route - BOOLEAN 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. + 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. + + rp_filter must be set to a non-zero value in order for + accept_local to have an effect. + default FALSE route_localnet - BOOLEAN -- 2.34.1