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-rw-r--r--Documentation/networking/ipvs-sysctl.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt
index f2a2488f1bf3..9573d0c48c6e 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -15,6 +15,13 @@ amemthresh - INTEGER
enabled and the variable is automatically set to 2, otherwise
the strategy is disabled and the variable is set to 1.
+backup_only - BOOLEAN
+ 0 - disabled (default)
+ not 0 - enabled
+
+ If set, disable the director function while the server is
+ in backup mode to avoid packet loops for DR/TUN methods.
+
conntrack - BOOLEAN
0 - disabled (default)
not 0 - enabled
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