[support] Dynamic MNP's for MR?

[Mattias Blomqvist]

Hello again,

On Tue, Sep 1, 2009 at 9:00 AM, Arnaud Ebalard <arno at natisbad.org> wrote:
> Mattias Blomqvist <mattias.blomqvist at gmail.com> writes:
>
>> I have a need for dynamically changing the Mobile Network Prefixes on a MR.
>> The only way I've found to do this at present is to change the
>> configuration file and restarting mip6d. This results in all tunnels
>> being down for the time it takes to restart mip6d. It works but isn't
>> a very good solution.
>
> Another way would be to extend the command line interface code in order
> to provide the feature, i.e. have something like the following on the MR:
>
> $ telnet localhost 7777
> mip6d> mnp get
> mnpA mnpB
> mip6d> mnp set mnpB mnpC mnpD
>
> Which would trigger the emission of a BU to the HA to update MNPs.

I took this route and it was quite easy to get it to work for adding
MNPs to existing HoA's. This works and the new MNP is reachable from a
CN.
What I do is basically adding (or deleting) the MNP to the MNP list
for an existing HoA record and then trigger a movement by a call to
mn_movement_event(). This results in a new BU which the HA accepts.
So far so good.
What I've discovered is that although the network of the newly added
MNP is reachable from a CN and the other way around, the network of
the newly added MNP is not reachable (pingable) from the MR itself.
This seems to be due to missing routes in at least the RT6_TABLE_MIP6
(252), maybe also in the main table. I've tried adding a call to
nemo_mr_tnl_routes_add() after adding the new MNP but before
triggering the BU. This does not seem to help.

What I'm looking for is some pointers in how to get the routes in
place using the already available infrastructure.

BR,
Mattias Blomqvist