From 87583ebb9f6ea6dc7f8ef167b815656787e429fc Mon Sep 17 00:00:00 2001 From: Philip Downey Date: Mon, 31 Aug 2015 11:30:38 +0100 Subject: IGMP: Document igmp_link_local_mcast_reports Document the addition of a new sysctl variable which controls the generation of IGMP reports for link local multicast groups in the 224.0.0.X range. IGMP reports for local multicast groups can now be optionally inhibited by setting the value to zero e.g.: echo 0 > /proc/sys/net/ipv4/igmp_link_local_mcast_reports To retain backwards compatibility the previous behaviour is retained by default on system boot or reverted by setting the value back to non-zero. Signed-off-by: Philip Downey Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index ac77a13d2ea2..ebe94f2cab98 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1201,6 +1201,11 @@ xfrm4_gc_thresh - INTEGER destination cache entries. At twice this value the system will refuse new allocations. +igmp_link_local_mcast_reports - BOOLEAN + Enable IGMP reports for link local multicast groups in the + 224.0.0.X range. + Default TRUE + Alexey Kuznetsov. kuznet@ms2.inr.ac.ru -- cgit v1.2.3