From owner-freebsd-hackers Mon Jul 16 20: 1:25 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from silby.com (cb34181-a.mdsn1.wi.home.com [24.14.173.39]) by hub.freebsd.org (Postfix) with ESMTP id 8E0A537B401 for ; Mon, 16 Jul 2001 19:58:40 -0700 (PDT) (envelope-from silby@silby.com) Received: (qmail 429 invoked by uid 1000); 17 Jul 2001 02:58:38 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 17 Jul 2001 02:58:38 -0000 Date: Mon, 16 Jul 2001 21:58:38 -0500 (CDT) From: Mike Silbersack To: Matt Dillon Cc: Len Conrad , Subject: Re: Weird named problem - IN A for nameservers being lost! In-Reply-To: <200107170221.f6H2Lcj36277@earth.backplane.com> Message-ID: <20010716215231.T417-100000@achilles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Mon, 16 Jul 2001, Matt Dillon wrote: > Interesting. He describes in the section about 'expiring glue' > creating loops in the DNS server, but doesn't mention a particular > bug. > > However, there's another section where he mentions something about > bind reducing the TTL by 5% for certain credibility cases. > > Going back to my original posting... the NS is 2016 and fuji > is 1846 = 170 = 5%. > > I think This credibility stuff reducing the TTL in named is > responsible for these blowups. I am going to email the bind group > with this whole mess to see what they have to say. > > -Matt I wish you luck in getting it fixed. That 5% may have been intended for removal; 8.1.2 used to reduce the TTL by 5% for _each_ query. That was clearly removed for 8.2, but perhaps the initial decrement was forgotten. However, the problem probably indicates a more serious problem in 8.x's resolver, which may be fixed in 9 and is not intended to be backported. I guess Mark'll have to answer that. (He seems to read and reply to -security, so he appears reachable.) Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message