Re: EDNS request problem on TTL=0 data

2011-06-28 Thread Cathy Almond
On 27/06/11 16:39, Paul Wouters wrote: On Mon, 27 Jun 2011, Florian Weimer wrote: 1 Is this problem happening because EDNS failure is not remembered for forwarders? There is no realiable way to detect EDNS support in forwarders, so there isn't anything to remember, really. Sadly, the

Re: EDNS request problem on TTL=0 data

2011-06-28 Thread Paul Wouters
On Tue, 28 Jun 2011, Cathy Almond wrote: BIND does take notice of this and it's something we're looking at to make better in future releases. But at the moment it's not foolproof and its effectiveness is dependent on circumstances. There is short term caching of learned 'we don't support

Re: EDNS request problem on TTL=0 data

2011-06-27 Thread Florian Weimer
* Paul Wouters: 1 Is this problem happening because EDNS failure is not remembered for forwarders? There is no realiable way to detect EDNS support in forwarders, so there isn't anything to remember, really. Sadly, the situation with authoritative servers is not much better. -- Florian

Re: EDNS request problem on TTL=0 data

2011-06-27 Thread Paul Wouters
On Mon, 27 Jun 2011, Florian Weimer wrote: 1 Is this problem happening because EDNS failure is not remembered for forwarders? There is no realiable way to detect EDNS support in forwarders, so there isn't anything to remember, really. Sadly, the situation with authoritative servers is not

Re: EDNS request problem on TTL=0 data

2011-06-24 Thread Scott Mann
Hi Paul, Which version of named are you running? You've likely run into an issue that we've seen before - basically, as you have surmised, your server has to retry each query and never gets a response regarding edns (so it can't remember). Let me know which version you are running and I'll