On Wed, 23 Mar 2005 20:06:59 -1000, Jim Thompson <jim at netgate dot com> wrote:
> 
> 
> Your netmask (255.255.248.0) is a /21, which is a combination of 8 of
> the old "class C" networks.
> 
> Does your cableco really run a 2048 node LAN on the backside of your
> cable modem?
> 

Many do.  My cable modem public IP is on a /21.  The amount of ARP
traffic I can pick up with a sniffer is incredible.  Sure seems like
poor network design, but I can get my full 4.0 Mb down/384 Kb up
virtually always.

-Chris