> I know CHAP is supported, but is it possible to
> connect to my ISP with PAP?

Attached is an update to /sys/src/cmd/ip/ppp (14 Oct version) to support
PAP authentication.  Note that although PAP is less secure than CHAP
(password is transmitted in cleartext), the specification says that
servers which provide both must offer CHAP first.

The command I use to connect to Demon UK is:

% ip/ppp -fP -m 1500 -p telco!0845-212-0666 -s $host:$pass

-- Richard