pppstatus(1) on Linux
The text eb09003c6f0d, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
console-based PPP status monitor
Flags it lists
-
--bytes -
--costs -
--errors -
--ipaddress -
--packets -
-d -
-i -
-s -
-v