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).
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 >> >> _______________________________________________ >> Softwires mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/softwires >> > >
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