From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: erik quanstrom Date: Mon, 13 Aug 2007 14:44:50 -0400 To: 9fans@cse.psu.edu Subject: Re: [9fans] lsub.org In-Reply-To: <5c82b3e7ca28d1d2fb8ddd70d81fd148@plan9.bell-labs.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Topicbox-Message-UUID: a8a7a6a6-ead2-11e9-9d60-3106f5b1d025 On Mon Aug 13 14:31:57 EDT 2007, geoff@plan9.bell-labs.com wrote: > We've been having good luck with the dns currently on sources. I > don't think I have seen the srvfail problem. The query waits on > reverse lookups seem to have been a symptom of local ndb > misconfiguration, though it would be better if dns coped more sensibly > with that. As I recall, the nameserver(s) for the reverse domain need > to have the relevant ptr records; pointing the reverse domain at the > wrong nameservers (implicitly or explicitly) seems to cause confusion. > > The main outstanding bug that I'm aware of is that aging resource > records seems to corrupt some data structure and dns never recovers. > There are two new control messages intended to help debug this: > "target N" and "age" (see dns.c). But if one doesn't age resource > records, dns can grow without bound. this is a problem i see with recursive nameservers doing lookups for email validataion, so it's not a question of local server misconfiguration. there's nothing i can do if arin or whoever has the wrong information. - erik