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From: Paul Ruizendaal <pnr@planet.nl>
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Subject: [TUHS] Origins of PPP
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I=E2=80=99m looking for the origins of SLIP and PPP on Unix. Both seem =
to have been developed long before their RFC=E2=80=99s appeared.

As far as I can tell, SLIP originally appeared in 3COM=E2=80=99s UNET =
for the PDP11, around 1980. =46rom the TUHS Unix tree, first appearance =
in BSD seems to be 4.3 (1986).

Not sure when PPP first appeared, but the linux man page for pppd has a =
credit that goes back to Carnegie Mellon 1984. First appearance in BSD =
seems to be FreeBSD 5.3 (2004), which seems improbably late (same =
source).

Paul=