RE: 3gpp scenario 2

["Thakur, Anand" <Anand.Thakur@hpsglobal.com>]

Juha,
As of now this seems to be the only solution, but i wonder if this solution
is going to scale well when number of IPV6 islands shoots up. Especially in
the 3gpp case we could be dealing with hundreds of thousands of (may be even
millions) of V6 nodes. In addition we will have to mandate that every V6
island has to be connected to the 6bone.

Plus, what about the scenario where Host A is in a V4 network Z and
generates a "A" query for Host B?

regards
Anand Thakur
HCL Perot Systems (A SEI CMM Level 5 Company)
Plot No 3, Sector 125, NOIDA (UP)-201301, India
* Tel  +91 120 4432755-79, X3348 (EPABX)
mobile:9811748512

> -----Original Message-----
> From:	juha.wiljakka@nokia.com [SMTP:juha.wiljakka@nokia.com]
> Sent:	Tuesday, December 17, 2002 4:54 PM
> To:	Anand.Thakur@hpsglobal.com
> Cc:	v6ops@ops.ietf.org
> Subject:	RE: 3gpp scenario 2
> 
> Anand,
> 
> I assume that this is a very common problem / environment in initial IPv6
> deployment, i.e. two separate IPv6 islands connected by IPv4 network using
> "IPv6 in IPv4" tunneling and solutions have already been thought by
> several (DNS) experts.
> 
> What if we already have some static "IPv6 in IPv4" tunnels configured from
> the operator's network to, say, IPv6 internet / 6bone and there is IPv6
> connection to node B? 
> 
> I am very happy to receive more comments on this issue.
> 
> Thanks,
> 	-Juha-
> 
> -----Original Message-----
> From: ext Thakur, Anand [mailto:Anand.Thakur@hpsglobal.com]
> Sent: 17 December, 2002 13:01
> To: Wiljakka Juha (NMP/Tampere)
> Cc: V6ops (E-mail)
> Subject: 3gpp scenario 2
> 
> 
> hi huha,
> i was just wondering about the scenario in which 2 IPV6 UEs communicate
> over
> an IPV4 network. In this scenario won't initial DNS resolution be a very
> difficult job (if not impossible)? 
> If you have not understood my question read this example:
> Let Host A be on IPV6 netork X and Host B on IPV6 network Y. Now, if A
> makes
> a DNS query ("A") for B, none of the name resolvers in network X will have
> an entry for B . How will this query finally reach network Y, assuming all
> intermediate routers are IPV4 only? Will A have to explicitly tunnel this
> request to network Y? I am also assuming that DNS servers in the IPV4
> internet don't support "AAAA".
> 
> regards
> Anand Thakur
> HCL Perot Systems (A SEI CMM Level 5 Company)
> Plot No 3, Sector 125, NOIDA (UP)-201301, India
> * Tel  +91 120 4432755-79, X3348 (EPABX)
> mobile:9811748512