mesh portal discovery

[david at lang.hm]

On Wed, 9 Jan 2008, John Watlington wrote:

>> In the case of the mesh portal (A NAT Internet Gateway in our case) we
>> need to get back the IP address of the gateway as well as DNS info.
>> A simple python server listening at a predefined port was providing
>> that.
>> That simple server has been replaced by a complete DHCP server in our
>> current implementation.
>
>
> The DHCP server was needed anyway.   And to implement shortest path
> routing both for sent and received packets, we needed a mechanism for
> receiving an IP address that reflected the nearest MPP anyway (or use
> NAT,
> something we would like to avoid inside the school....)

you really don't want to have your IP address change becouse you moved to 
have a different MPP closer to you.

David Lang