ppl.users and ppl.ipool

In SLIP, ppl.users maps each user name to a single remote host. This allows a dial-in user to invoke ppl without identifying the remote host that is calling. It allows a dial-out user to invoke ppl without specifying the remote host that is being called. PPP does not provide such functionality.

The ppl.ipool in SLIP specifies a pool of local Internet addresses to be used for modem connections. PPP does not provide such functionality.