yes, but this is in my experience rare, even with larger providers.

for example, att broadband, who interpreted my provisioning a newly
purchased cable modem, then returning their rented cable modem (as
instructed) as a request to entirely disconnect my service for a
few days, appeared to leak dns adequately a few months ago.

bill arbaugh's point about ping is well-taken, as usual.


On Wed, Nov 20, 2002 at 05:39:15PM +0000, Stuart Henderson wrote:
> >yes, convert channel signaling over dns works with any service that
> >allows dns lookups and responses including many wireless providers
> >and some cable modem networks.
> 
> Unless non-authenticated users are diverted to a separate DNS server
> that only gives out the IP address of the authentication server and does
> no recursive lookups..
> 
> --
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