This i not a question. It's a hint what I had to do to get my ADSL-connection to work.

The default route option in pppoe.conf didn't seem to work.

I had in my routing table:
192.168.30.1 * UH (something) ppp0
.
.
.
.
default 192.168.30.1 UG (something) eth0

This defaultroute was placed there by the adsl-start script.
Eth0 was connected to my modem.
This seemed right to me but nothing worked. After messing around in the config files for some time i discovered that if i replaced the default route manually, pointing directly at ppp0 everything worked.

So, solution time (my solution anyway):
in pppoe.conf:
set the default gateway option to "no"

in rc.local:
delete any old default route with "route del default"
start the adsl connection with: "/usr/sbin/adsl-start"
add a new default route with "route add default gw 192.168.30.1 dev ppp0"

Surf away. The IP-address is valid for my connection i have to point out.

Well, I hope this is to use for someone. Maybe not the nicest solution but I don't give a heck, 'cause it's working.

Maybe someone can tell how it should be done.