tcpdump(1) on FreeBSD
The text 8bf9aca266de, as FreeBSD 6.4-RELEASE shipped it.
dump traffic on a network
Flags it lists
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-A -
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-T -
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-XX -
-Z -
-c -
-d -
-dd -
-ddd -
-e -
-f -
-i -
-l -
-m -
-n -
-p -
-q -
-r -
-s -
-t -
-tt -
-ttt -
-tttt -
-u -
-v -
-vv -
-vvv -
-w -
-x -
-xx -
-y