Agreed that there is no v4 dns server option (probably never will be)
defined on dhcpv6. If the host doesnt want to statically configure the
v4 dns server, in theory, the B4 could send a dhcpv4 dns request over
the tunnel and the AFTR would relay it to a dhcpv4 server. But you can
see, this is overkilled. The more sensible way is to implement dns
proxy in B4.
On May 27, 2010, at 11:55 AM, "Jacni Qin" <[email protected]> wrote:
On Thu, May 27, 2010 at 1:00 AM, Lee, Yiu
<[email protected]> wrote:
If the B4 is in the host, the B4 implementation should be able to
proxy the v4 DNS request over v6. Or B4 tunnels the DNS message and
sends to a v4 DNS server (less desirable).
-- while as mentioned in the draft, currently there is no option
defined for passing the v4 DNS server address to hosts.
and for the DNS proxy case, do you mean if the OS doesn't support
DNS request over v6, we should then provider a patch for this
function along with the B4 implementation?
thanks,
On 5/26/10 12:47 PM, "Jacni Qin" <[email protected]> wrote:
another question,
for the host scenario(with DS-Lite software installed), what if the
operating system can not send DNS query over IPv6?
i'm sorry if i missed some discussion on this before.
many thanks,
Jacni
On Wed, May 26, 2010 at 10:33 PM, Lee, Yiu
<[email protected]> wrote:
The B4 element contains a DNS proxy that will support DNS over v4
and proxy
the DNS messages to the DNS server over v6 in the ISP network. The DNS
server in the ISP must be able to resolve all the A and AAAA records.
On 5/26/10 5:26 AM, "[email protected]"
<[email protected]> wrote:
> Hi Alain,
> I have one question about DS-lite. Would you please clearify
it? Thanks.
>
> In your draft, you mention the B4 element can only get the
IPv6 address
> of a DNS recursive server, and as such will have to perform all
DNS
> resolution over IPv6. I want to know whether the DNS server can
resolve all
> IPv4 nodes over IPv6 successfully. And how? Is it necessary that
the type A
> DNS query packet travels through AFTR? Is there any requirement
for the DNS
> server in the ISP core network?
>
> Best Regards,
> ------------------------------------
> Zhenqiang Li
> 13911635816
> Department of Network Technology
> China Mobile Research Institute
> 2010-05-26
> _______________________________________________
> Softwires mailing list
> [email protected]
> https://www.ietf.org/mailman/listinfo/softwires
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