[dnsoverhttp] Thinking about inlining DNS in HTTP

[Patrick McManus <[e-mail]>]

Anyone want to talk about the general model of pushing DNS records to
clients as part of HTTP? This was originally part of the SPDY documents,
but was never fully implemented there and never made it into HTTP/2 due to
its experimental and speculative nature (unlike the rest of what became
h2). But a number of folks, including myself, think the idea still holds
significant promise.

Briefly, if www.example.com were to include references to content on
www.cdn.com it would be able to staple, unsolicited, at the protocol level
the necessary DNS records for the cdn into the http response containing the
reference. .presumably with a complete dnssec chain inline. Since
example.com pushes this information to different folks all the time, it can
have the chain cached suitably to the lifetime of the records in the chain.
Because the client can verify the information via dnssec it can go ahead
and connect www.cdn.com without the round trips necessary for resolution.

Remembering that this is bar bof fodder, If the HTTP folks were interested
in going down this path with an extension to h2 what would the guidance
from the dns folk be on corner cases to consider?

-Patrick