dhcping(8) on Linux
The text f21839003622, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
send a DHCP request to DHCP server to see if it's up and running
Flags it lists
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-V -
-c -
-g -
-h -
-i -
-q -
-r -
-s -
-t -
-v