Date: Tue, 18 Mar 2003 19:26:24 +0200 From: Konstantinos Konstantinidis <kkonstan@duth.gr> To: obrien@freebsd.org Cc: hubs@freebsd.org, nac@duth.gr Subject: gr.freebsd.org dns problems Message-ID: <20030318192624.6205e944.kkonstan@duth.gr>
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Hello, On <20030309215448.GB30033@dragon.nuxi.com> you pointed out that, among other things, gr.freebsd.org had dns problems of some kind. I happen to be managing, among other things, the DNS service of the University here in Greece that gr.freebsd.org is delegated to, so this was quite a surprise to me! Anyway, I started testing from various sites and noticed that indeed there are very weird and inconsistent problems from one greek ISP, which could be what you were experiencing. However the moment I installed dns cache and bypassed their dns caches everything worked perfectly well. It seems to me that this weird problem that I am having manifests itself with *some* of the dns caches deployed on the internet, and for some reason, only with 3 out of the dozens of my zones. Here's what happens in more detail... gr.freebsd.org is delegated to the same name servers that serve the duth.gr (those being the university's domains), and they are configured in exactly the same way, with identical zones (apart from the actual PTR, A etc. records of course) however while all *.duth.gr zones work perfectly well from everywhere, 3 fail intermittently, there seems to be an extra delay of 5sec somwhere and most of the times they timeout. The only thing these 3 have in common is that they are not subdomains of duth.gr. I do not think that this has something to do with the problem though. The other two are childhealth.gr. and pedinfo.gr. The fact that responses do come back to me sometimes, but are all 5sec later than expected (other zones from that cache are 20ms +/-5, these 3 are 5020 +/-5 suggest that something is waiting for something in vain and timing out after 5 sec - wish I knew what though). I honestly cannot figure out what it is that is going wrong. Can someone offer me a clue? --kkonstan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hubs" in the body of the message
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