In some email I received from itojun@iijlab.net, sie wrote:
> 
> >Someone pointed out that there were commands to control PVC's (pvcsif,
> >pvctxctl) but what about ARP servers, etc ?
> 
> 	correct me if i'm wrong.  I don't think there is any of LANE, SVC
> 	and such.  I believe PVC is the only one supported as a normal network
> 	interface.  if you can throw AAL5 frames directly via en driver,
> 	i believe you can do something, but that's too hairy.

Hmmmm...if I try and ping the NetBSD pvc0 interface, tcpdump shows me this:

13:59:43.581195 arp-#8
                         0013 0800 0000 0008 0400 0000 c0a8 0a02
13:59:58.581883 arp-#8
                         0013 0800 1400 0008 0400 0000 4700 0580
                         ffe1 0000 00f1 150b ab00 2048 0609 8a00
                         c0a8 0a02
14:00:13.582479 arp-#8
                         0013 0800 0000 0008 0400 0000 c0a8 0a02
14:00:28.583156 arp-#8
                         0013 0800 0000 0008 0400 0000 c0a8 0a02

I'm trying to ping 192.168.10.1 from 192.168.10.2.

I also saw one of these:

pvc0: recv'd invalid LLC/SNAP frame [vp=0,vc=100]

Hmm, how would one write an ARP server for ATM or find docs on what needs
to happen for one to work ?

Darren