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-rw-r--r--Documentation/networking/mptcp-sysctl.rst8
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst
index 1683c139821e..1eb6af26b4a7 100644
--- a/Documentation/networking/mptcp-sysctl.rst
+++ b/Documentation/networking/mptcp-sysctl.rst
@@ -8,9 +8,11 @@ MPTCP Sysfs variables
===============================
add_addr_timeout - INTEGER (seconds)
- Set the timeout after which an ADD_ADDR control message will be
- resent to an MPTCP peer that has not acknowledged a previous
- ADD_ADDR message.
+ Set the maximum value of timeout after which an ADD_ADDR control message
+ will be resent to an MPTCP peer that has not acknowledged a previous
+ ADD_ADDR message. A dynamically estimated retransmission timeout based
+ on the estimated connection round-trip-time is used if this value is
+ lower than the maximum one.
Do not retransmit if set to 0.