tcpstat(1) on Linux
The text 9ccbdd3a5671, as Debian 6.0 (Squeeze) shipped it.
report network interface statistics
Flags it lists
-
-? -
-B -
-F -
-R -
-a -
-b -
-e -
-h -
-i -
-l -
-o -
-p -
-r -
-s