Subject: Re: [dnsext] V4-V6 DNS Proxying

From: "Durand, Alain" <[email-masked]>
Date: Fri, 12 Mar 2010 09:46:23 -0500

This is exactly what is called for in DS-lite. See draft-ietf-softwire-dual-stack-lite-04

Alain.

----- Original Message -----
From: [email-masked] <[email-masked]>
To: [email-masked] <[email-masked]>
Sent: Fri Mar 12 08:24:43 2010
Subject: [dnsext] V4-V6 DNS Proxying

Hi all,

Can anybody think of a particularly good reason why a DNS proxy, say running on a home LAN gateway, couldn't receive DNS traffic on either of v4 or v6 interfaces and then pass it to the "WAN" side, untouched, using the other?  This should ideally work without breaking stuff, which includes a completely transparent packet forwarder with knowledge of fragmentation.  Especially for v4, the attractive aspect of a DNS proxy is of course that the LAN's DHCP server need not know anything about the exterior interface or its configuration before offering addresses to internal clients.  So, unless I'm missing anything, the packet payloads themselves should be easily forwarded.  An ideal gateway would of course provide the option to switch this off.

Cheers,
Sabahattin