disabling ipv6 with ppp

[Hanspeter Roth]

Hello,

I'm using ppp. Even though INET6 is disabled in the kernel there is
some INET6 stuff configured. Netstat -rn shows: 

...
Internet6:
Destination                       Gateway                       Flags      Netif Expire
::1                               ::1                           UH          lo0
fe80::%lo0/64                     fe80::1%lo0                   U           lo0
fe80::1%lo0                       link#4                        UHL         lo0
ff01::/32                         ::1                           U           lo0
ff02::%lo0/32                     ::1                           UC          lo0
ff02::%tun0/32                    fe80::20f:3dff:feae:5416%tun0 UGS        tun0

The last route to 'ff02::%tun0/32' appears only if ppp is running.
Some seconds after ppp is startet (ppp -quiet -auto isp) it goes
online. Trying to delete the route by hand claims it is a bad
address:

	route delete 'ff02::%tun0/32'
route: bad address: ff02::%tun0/32

How can I run ppp without INET6 support?

-Hanspeter