Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Paul Roberts
e old me". 😞 Cheers, Paul From: Nico CARTRON Sent: 17 May 2018 13:01 To: Paul Roberts Cc: ML BIND Users Subject: Re: BIND srtt algorithm not working as expected Hi Paul, On 17 May 2018, at 13:46, Paul Roberts mailto:p...@callevanetworks.com>> wr

Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Nico CARTRON
dedicated BIND servers? And have the other, non Sophos DNS traffic, sent to the current BIND servers? Cheers, Nico > > From: Tony Finch > Sent: 17 May 2018 12:34 > To: Paul Roberts > Cc: bind-users@lists.isc.org > Subject: Re: BIND srtt algorithm not working as expected > >

Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Paul Roberts
we are caught between a rock and a hard place. :-( From: Tony Finch Sent: 17 May 2018 12:34 To: Paul Roberts Cc: bind-users@lists.isc.org Subject: Re: BIND srtt algorithm not working as expected Paul Roberts wrote: > After doing some more packet captures, it looks l

Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Tony Finch
Paul Roberts wrote: > After doing some more packet captures, it looks like a lot of the > queries are related to Sophos live protection DNS lookups (lots of > queries for sophosxl.net), so there are a lot of queries which don't get > resolved. Good grief. There are a few things you might do to

Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Matus UHLAR - fantomas
please wrap your lines when possible. <76 characters ideally. On 17.05.18 08:32, Paul Roberts wrote: After doing some more packet captures, it looks like a lot of the queries are related to Sophos live protection DNS lookups (lots of queries for sophosxl.net), so there are a lot of queries which

Re: BIND srtt algorithm not working as expected

2018-05-17 Thread Paul Roberts
After doing some more packet captures, it looks like a lot of the queries are related to Sophos live protection DNS lookups (lots of queries for sophosxl.net), so there are a lot of queries which don't get resolved. We see multiple queries for the same name and the resolver seems to retransmit t

Re: BIND srtt algorithm not working as expected

2018-05-16 Thread Tony Finch
Paul Roberts wrote: > > This seems to imply on slide 16 that with lower query rates, BIND 9.8 > has a habit of sending fairly significant volumes to DNS servers with > higher rtts. I am wondering if this is still the case in BIND 9.10 or > 9.11 and whether there is anything that can be done about