(usagi-users 02988) Re: Quick question on MIP ...

["Daniel Tyrode" <dtyrode4@xxxxxxxxxxx>]

Hi Noriaki,

Thanks for the information. I will check the code and see if I can do some
slight changes to the BUs ...

One very last question, and I hope this is the correct mailing list - please
forgive me if this is not the case. Again related to the same previously
mentioned MIP scenario; I have noticed that when the MN "loads" or
"activates" an ipv6 tunnel ( this can be when starting the mobile-ip6 daemon
or when moving to a foreign network ), all the routing information of
previously existing ipv6 tunnels dissapears and they must be manually
re-instated. IPv6 addresses and admin status of these previously created
tunnels remain untouched though.  Is there a good reason for this to happen
? ... is there a way it can be avoided ?

Once again, many thanks for your help and patience,

Regards,

Daniel Tyrode


----- Original Message ----- 
From: "Noriaki Takamiya" <takamiya@xxxxxxxxxxxxx>
To: <usagi-users@xxxxxxxxxxxxxx>; <dtyrode4@xxxxxxxxxxx>
Sent: Thursday, July 01, 2004 2:31 AM
Subject: (usagi-users 02987) Re: Quick question on MIP ...


> Hi,
>
> >> Wed, 30 Jun 2004 19:42:29 +0100
> >> [Subject: (usagi-users 02986) Quick question on MIP ...]
> >> "Daniel Tyrode" <dtyrode4@xxxxxxxxxxx> wrote...
>
> dtyrode4> By using mipdiag & tcpdump, I realize that the CN receives a
single BU (the
> dtyrode4> HOTI tunneled through the HA), yet it does not send a BA back to
the MN.
> dtyrode4> This is not the case with the HA, which receives and ACKs the
BUs.
> dtyrode4> Where could the problem be ? .. should I expect to be able to
detect the
> dtyrode4> HOTI-HOT and COTI-COT with mipdiag ? ...
>
>   In this implementation, MN doesn't add A flag in BU. So CN won't
>   send BA to MN. It is reasonable case.
>
> dtyrode4> On the other hand, when the MN returns to the Home Network, the
MN does not
> dtyrode4> send BUs to the CN, forcing the CN to mantain the binding of the
CoA until
> dtyrode4> the cache expires ( >400 secs later ) and interrupting IP
communication. Any
> dtyrode4> ideas on how to approach this problem ?
>
>   I'm sorry, but you should modify to send BU for de-registration....
>
>   Regards,
>
> --
> Noriaki Takamiya
>
>
>