>>>>> "derMouse" == der Mouse <mouse@Rodents.Montreal.QC.CA> writes:

    >> It does work though.

    derMouse> So did Classes A, B, and  C, back in the bad old days of
    derMouse> IPv4.  And,  later, host/net divisions  that always fell
    derMouse> on octet boundaries.

I'm not sure it  is netmask related. 

And when  I say "it does work",  I forgot to mention  that I typically
use ospf6d from  zebra rather than route6d to  accomplish this. I have
found route6d a bit unweildy, since it doesn't always play nicely when
you try to run, say, zebra bgpd  on the same box...  But then that's a
different problem...

-w