Re: [manet] AODVv2 implementation

[Charlie Perkins <[e-mail]>]

Hello Henning,

As I remember, there were some more theoretical reasons why routes 
should be timed out, but I would need to go back a long time to 
resurrect the exact reasoning.  As an error-prone guess, it could have 
to do with sequence number rollover.  Anyway, after a certain amount of 
time a route is considered invalid.  Nevertheless, the route should be 
kept in order to maintain pertinent information information.

We might want to revisit this and determine how strong the mandate 
should be.

Regards,
Charlie P.


On 12/4/2023 1:03 AM, Henning Rogge wrote:
> Hi,
>
> I was thinking about how to implement AODV2 on a TUN but hit an
> interesting issue when reading through the "Interaction with the
> Forwarding Plane" chapter of AODVv2...
>
> Chapter 6.4:
> "AODVv2 needs to update the record of when a route was last used to
> forward a packet".
>
> Does this mean AODV cannot use the kernel routing forwarding system
> and is expected to do everything in user space? I ask because the
> "routing cache" (and its statistics for each route) were removed from
> Linux in version 3.6.
>
> Henning Rogge