ping6(8) on macOS
The text 4d6c028f871a, as OS X 10.9.5, OS X 10.9.4, OS X 10.9.3, OS X 10.9.2, OS X 10.9.1, OS X 10.9 shipped it.
send ICMPv6 ECHO_REQUEST packets to network hosts
Flags it lists
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-B -
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-z