ping6(8) on FreeBSD
The text 51c1f9390723, as FreeBSD 12.3-RELEASE shipped it.
send ICMPv6 ECHO_REQUEST packets to network hosts
Flags it lists
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-D -
-H -
-I -
-N -
-P -
-R -
-S -
-W -
-X -
-a -
-b -
-c -
-d -
-f -
-g -
-h -
-i -
-l -
-m -
-n -
-o -
-p -
-q -
-r -
-s -
-t -
-v -
-w -
-x -
-z