Doing simple regex found a couple more duplicates.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
.SH INTEROPERABILITY
.PP
Unmanaged (static) L2TPv3 tunnels are supported by some network
-equipment equipment vendors such as Cisco.
+equipment vendors such as Cisco.
.PP
In Linux, L2TP Hello messages are not supported in unmanaged
tunnels. Hello messages are used by L2TP clients and servers to detect
so for example with 10 non-responsive flows approximately 0.2% of responsive flows
will be misidentified.
-To mitigate this, SFB performs performs periodic re-hashing to avoid
+To mitigate this, SFB performs periodic re-hashing to avoid
misclassification for prolonged periods of time.
The default hashing method will use source and destination ip addresses and port numbers
.B Lower
.br
The lower bound of the 32-bit instance field of the port name.
-The instance field is often used as as a sub-class indicator.
+The instance field is often used as a sub-class indicator.
.TP
.B Upper
.br
The upper bound of the 32-bit instance field of the port name.
-The instance field is often used as as a sub-class indicator.
+The instance field is often used as a sub-class indicator.
A difference in
.BR "lower " "and " upper
means the socket is bound to the port name range [lower,upper]