US patent 5473599

Henning Brauer hb-nanog at
Tue Apr 22 15:07:16 UTC 2014

* Nick Hilliard <nick at> [2014-04-22 15:33]:
> On 22/04/2014 12:31, Henning Brauer wrote:
> > it does NOT cover carp, not at all.
> that is a political statement rather than a legal opinion.  If you read the
> patent, it's pretty obvious that when you have a group of carp-enabled
> devices providing a stable gateway IP address, and these devices are
> routing traffic received via the carp published address, this configuration
> provides the same functionality that's described in the patent claims.
> This hasn't been tested in court and neither of us is a lawyer and the
> patent seems to have expired, so it's academic at this stage.

it is academic, indeed.
I was involved with carp's creation, we did all the work to make sure
it just avoids being covered by the patent. and that included getting
legal advice.

Henning Brauer, hb at, henning at
BS Web Services GmbH, AG Hamburg HRB 128289,
Full-Service ISP - Secure Hosting, Mail and DNS Services
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