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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>
This commit is contained in:
Philip Downey 2015-08-31 11:30:38 +01:00 committed by David S. Miller
parent 4c22279848
commit 87583ebb9f
1 changed files with 5 additions and 0 deletions
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5
Documentation/networking/ip-sysctl.txt
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@ -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