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authorPhilip Downey <pdowney@brocade.com>2015-08-31 11:30:38 +0100
committerDavid S. Miller <davem@davemloft.net>2015-08-31 12:30:37 -0700
commit87583ebb9f6ea6dc7f8ef167b815656787e429fc (patch)
tree86079c341580a60c6c8880a1e027114752475dec /Documentation/networking
parent4c22279848c531fc7f555d463daf3d0df963bd41 (diff)
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 <pdowney@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/ip-sysctl.txt5
1 files changed, 5 insertions, 0 deletions
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