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-rw-r--r--Documentation/networking/mptcp-sysctl.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst
index 5bfab01eff5a..1683c139821e 100644
--- a/Documentation/networking/mptcp-sysctl.rst
+++ b/Documentation/networking/mptcp-sysctl.rst
@@ -12,6 +12,8 @@ add_addr_timeout - INTEGER (seconds)
resent to an MPTCP peer that has not acknowledged a previous
ADD_ADDR message.
+ Do not retransmit if set to 0.
+
The default value matches TCP_RTO_MAX. This is a per-namespace
sysctl.