IPv6 error msg...

[mirabilos {Thorsten Glaser} <isch@ecce.homeip.net>]

Ok, I get the following two msgs:

 /bsd: ppp0: IPv6 not supported

and cannot disable ipv6 in pppd /etc/ppp/options.
Linux pppd-2.4.0b2 _can_ do this and additionally
has got "usepeerdns". Are there any reasons we
are stuck with pppd-2.3.* ?

Second and more serious, I get:

 Jul  1 13:12:34 ecce /bsd: nd6_lookup: failed to add route for a
 neighbor(3ffe:0b80:0002:029b::0001), errno=17
 Jul  1 13:13:07 ecce /bsd: nd6_lookup: failed to add route for a
 neighbor(3ffe:0b80:0002:029b::0001), errno=17
 Jul  1 13:13:49 ecce last message repeated 3 times

And how could this be solved?
I'm using -current, about four days old.

-mirabilos
-- 
C:\>debug
-e100 EA F0 FF 00 F0
-g
--->Enjoy!