Arpwatch stops working in Karmic

[Rich Carreiro]

I'm running Karmic. Sometime in the past month or so (perhaps when I
upgraded to karmic!) arpwatch stopped working. It immediately exits
with
   Link layer type 189 not ethernet or fddi

But running "arp" shows what it should. And when I run wireshark and
see an arp request/reply it says the hardware type is type ethernet
(0x01).  And the LAN is running fine.

I've tried googling on "Link layer type 189" -- with quotes, and there
are zero matches.  And even without quotes, nothing useful.  Also
tried some searches for BD and 0xBD (189 dec = 0xBD).

And there have been literally zero hardware changes on the machine
(and on the LAN in general, for that matter) since it was working.

Any ideas?

--
Rich Carreiro                            rlcarr at rlcarr.com