- From: Ted Harding <Ted.Harding@nessie.mcc.ac.uk>
- Date: Mon, 03 May 1999 21:05:01 +0100 (BST)
- To: A.Flavell@physics.gla.ac.uk, www-amaya@w3.org, cache-users@mcc.ac.uk
Thanks for the following! On 03-May-99 Alan J. Flavell wrote: > > I noticed your email to the Amaya list (I was reading the archive, > I don't subscribe myself). > > I think the reason for the discrepancy is not the one that you > identified. If I look up the address of www.w3.org in the DNS, then I > get an address that resolves to w3csun1.cis.rl.ac.uk (!) Yes, you are right. From Manchester (mcc.ac.uk): dig -a www.w3.org -> www.w3.org. 7200 A 130.246.75.136 dig -x 130.246.75.136 -> 7200 PTR w3csun1.cis.rl.ac.uk. while dig -x 18.19.1.22 -> 109044 PTR slow1.w3.org. which is presumably the horse's mouth. > This server has not yet been updated. However, the "real" www.w3.org > is 18.29.1.22, and if you access this by number, you see Amaya 2.0 > there. Yes, http://18.19.1.22/Amaya/User/BinDist.html gets you there. However, this doesn't clearly explain how a) http://www.w3.org/Distributions/... also gets you there (unless 130.246.75.136/Distributions/... points directly to 18.19.1.22/Distributions/...); b) I was able, using my son's ISP and http://www.w3.org/Amaya/..., to also get through to the right thing. I would guess (b) must mean that the ACADEMIC DNS system points to the rl.ac.uk site, while the COMMERCIAL DNS points to the true one. And then I would I hazard a guess that this itself may be associated with the academic Cache system (I notice, Alan, that you use a gla.ac.uk address). In any case, I don't think I approve of the same FQDN address leading to different IP addresses depending on where you are, though I dare say it's legal. There's too much scope for getting folk into a tangle (as I have just found out). Many thanks for contributing to clarification. I await the final truth from the gurus' mouths. Best wishes, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <Ted.Harding@nessie.mcc.ac.uk> Date: 03-May-99 Time: 21:05:01 ------------------------------ XFMail ------------------------------
Received on Monday, 3 May 1999 16:05:53 UTC