tcpdump(1) on FreeBSD
The text 176b9e8c852d, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE shipped it.
dump traffic on a network
Flags it lists
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-A -
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-dd -
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-t -
-tt -
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-u -
-v -
-vv -
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-w -
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-y