ftp.nice.ch/pub/next/connectivity/protocol/PPPMonitor.1.16.NIHS.bs.tar.gz#/PPPMonitor1.16/Source/bin

LoadPPPDriver.c
[View LoadPPPDriver.c] 
pppdown
 
pppup
 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.