ldns-notify(1) on Linux
The text 6584db66c16b, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
notify DNS servers that updates are available
Flags it lists
-
-d -
-h -
-p -
-r -
-s -
-v -
-y -
-z