Re: How to find initiating host address?

[Paul A Vixie <vixie@mibh.net>]

> Source dependent replies are generated today by queries for netscape.com;
> I'm sure they are not the only ones to do so.

sure, but...

> (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).

...this is one of the reasons the netscape home page often does not load
the first time, and it's a silly thing to do for caching reasons, but at
least it's something the standards allow.

(and yes, i sometimes deliberately use a far-away dns proxy just so that
the responses servers want to tune for "me" can be as stupid as possible;
and i know from direct observation that hundreds of thousands of modem
pool users have the same misdirection in their dns lookup path -- cool, huh?)

> 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.

what happened to sonar?  it was a good start in the right direction.