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From: Hangbin Liu <liuhangbin@xxxxxxxxx>
Document sysctl pmtu_disc based on commit 3654e61137db ("ipvs: add
pmtu_disc option to disable IP DF for TUN packets").
Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
Documentation/networking/ipvs-sysctl.txt | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/networking/ipvs-sysctl.txt
b/Documentation/networking/ipvs-sysctl.txt
index a6feecd467cd..056898685d40 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -175,6 +175,14 @@ nat_icmp_send - BOOLEAN
for VS/NAT when the load balancer receives packets from real
servers but the connection entries don't exist.
+pmtu_disc - BOOLEAN
+ 0 - disabled
+ not 0 - enabled (default)
+
+ By default, reject with FRAG_NEEDED all DF packets that exceed
+ the PMTU, irrespective of the forwarding method. For TUN method
+ the flag can be disabled to fragment such packets.
+
secure_tcp - INTEGER
0 - disabled (default)
--
2.7.0.rc3.207.g0ac5344
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