Network Communication Kernel PPP and SLIP are obsolete. Kernel PPP was rewritten and became User PPP back in release 2.1 I believe. It has only been carried forward for backward compatability. Slip was never embraced by the ISP community from the very start. In todays world where cable and dsl access is the norm dial up access is hard to find and slip access is not offered at all.
State Changed From-To: open->closed The kernel SLIP and PPP drivers and associated utilities were removed from the base system in April 2009 in r190751.