'lo (i've no idea which list is appropriate)

i'm unable to delete atalk routes, (ie, NETATALK), and
was wondering if I'm doing something wrong, or is something
amok..

--
AppleTalk:
Destination        Gateway            Flags     Refs     Use    Mtu  Interface
0.0                0.0                U           0        0      -  lo0
16500-16503.0      16500.33           U           0        0      -  fpa1
16500.33           0.0                UH          0        0      -  lo0
16504-16511.0      16500.33           U           0        0      -  fpa1
16512-16575.0      16500.33           U           0        0      -  fpa1
16576-16591.0      16500.33           U           0        0      -  fpa1
16592-16599.0      16500.33           U           0        0      -  fpa1

#route delete -atalk 16500.33
writing to routing socket: No such process
delete net 16500.33: not in table
--

i'm having no end of trouble getting atalk to working with
two fddi interfaces, neither of which have defined appletalk 
zones - restarting atalkd to test an atalkd.conf change requires
a reboot at the moment since things complain about
"as_timer: can't route 16500.33 to loop: File exists"

if anyone has a clue in these matters, please let me know.

thanks in advance,
matthew.