I also had this problem. The solution is in /usr/share/doc/kppp/README.Debian:
uncomment the "#" before the "noauth" in /etc/ppp/peers/kppp-options
Please maintainers, can this "#" be removed by default? Or if that can't be
done, could the friendly installer send a mail to tell users that we have to do
that on our own?
I also had this problem. The solution is in /usr/share/ doc/kppp/ README. Debian:
uncomment the "#" before the "noauth" in /etc/ppp/ peers/kppp- options
Please maintainers, can this "#" be removed by default? Or if that can't be
done, could the friendly installer send a mail to tell users that we have to do
that on our own?