Re: How to find initiating host address?

["Àü¿ìÁ÷" <chun@comeng.chungnam.ac.kr>]

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Harald Tveit Alvestrand @[<:GT:

> Source dependent replies are generated today by queries for netscape.com;
> I'm sure they are not the only ones to do so.
>
> (netscape.com generates a zero-lifetime CNAME pointing to a host that it
> guesses is "close" to you - the name tells you a bit about its assumptions,
> so it can be fun querying various resolvers and seeing what comes back).
>
> Strengthens my point made repeatedly over the last 5 years that there needs
> to be some way applications can make even a half-hearted guess at network
> metrics - if there isn't an architecturally clean way, people will find
> other ways.
>

  Could you give any reference on the "netscape.com"?
and What was your point,
You mean there should be someway to measure network metrics
or there should be some way to determine who initiate the querry ?
Do you happen to have material, white paper, TM etc on this problem.

In my case, I am going to make a special NAT + DNS that will respond
diferently according to who initiate the query.
If the currunt DNS standard have no such feature,
the initiator(or source)  optional field can be added in query and
subsequent NS may just copy this field.
Then the last NS, the owner of the resource record, can make use of that field.

 What do you think about this?