net: ipv6: mld: document force_mld_version in ip-sysctl.txt

Document force_mld_version parameter in ip-sysctl.txt.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 1cb3aeb4baff919a5d4ee040af880eaf73c3daae..a46d78583ae1d9b1a8b49b96066f423f4b29d037 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -1358,6 +1358,11 @@ mldv2_unsolicited_report_interval - INTEGER
        MLDv2 report retransmit will take place.
        Default: 1000 (1 second)
 
+force_mld_version - INTEGER
+       0 - (default) No enforcement of a MLD version, MLDv1 fallback allowed
+       1 - Enforce to use MLD version 1
+       2 - Enforce to use MLD version 2
+
 suppress_frag_ndisc - INTEGER
        Control RFC 6980 (Security Implications of IPv6 Fragmentation
        with IPv6 Neighbor Discovery) behavior: