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ipvs: Document sysctl pmtu_disc

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Document sysctl pmtu_disc based on commit 3654e61137 ("ipvs: add
pmtu_disc option to disable IP DF for TUN packets").

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Hangbin Liu 2017-02-20 16:31:38 +08:00 committed by Simon Horman
parent 24b444155b
commit 3c679cba58
1 changed files with 8 additions and 0 deletions
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8
Documentation/networking/ipvs-sysctl.txt
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@ -175,6 +175,14 @@ nat_icmp_send - BOOLEAN
for VS/NAT when the load balancer receives packets from real for VS/NAT when the load balancer receives packets from real
servers but the connection entries don't exist. 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 secure_tcp - INTEGER
0 - disabled (default) 0 - disabled (default)