Re: intermittent name resolution failures

2018-12-29 Thread kamaraju kusumanchi
On Fri, Dec 28, 2018 at 2:37 PM Florian Weimer wrote: > > * kamaraju kusumanchi: > > > I see a lot of differences between trial_6.txt and trial_4.txt. Does > > that mean anything or is this variation expected? > > The first hop should be the same in all cases and reachable (no > stars). It looks

Re: intermittent name resolution failures

2018-12-28 Thread Florian Weimer
* kamaraju kusumanchi: > On Fri, Dec 28, 2018 at 3:51 AM wrote: >> >> Whenever your DNS fails try a "traceroute 8.8.8.8". Compare its results >> to what you get when you do it at times where your DNS works. Perhaps >> this sheds some light on it. > > That is tough to capture because the problem i

Re: intermittent name resolution failures

2018-12-28 Thread kamaraju kusumanchi
On Fri, Dec 28, 2018 at 3:51 AM wrote: > > Whenever your DNS fails try a "traceroute 8.8.8.8". Compare its results > to what you get when you do it at times where your DNS works. Perhaps > this sheds some light on it. That is tough to capture because the problem is intermittent. When I retry it s

Re: intermittent name resolution failures

2018-12-28 Thread tomas
On Fri, Dec 28, 2018 at 11:57:35AM +0100, Pascal Hambourg wrote: > Le 28/12/2018 à 09:51, to...@tuxteam.de a écrit : > >On Thu, Dec 27, 2018 at 11:41:48PM -0500, kamaraju kusumanchi wrote: > >>How to debug intermittent name resolution failures on a Debian Stretch > >>

Re: intermittent name resolution failures

2018-12-28 Thread Pascal Hambourg
Le 28/12/2018 à 09:51, to...@tuxteam.de a écrit : On Thu, Dec 27, 2018 at 11:41:48PM -0500, kamaraju kusumanchi wrote: How to debug intermittent name resolution failures on a Debian Stretch machine? I take your DNS server is 8.8.8.8 And 8.8.4.4, as can be seen in /etc/resolv.conf. My top

Re: intermittent name resolution failures

2018-12-28 Thread tomas
On Thu, Dec 27, 2018 at 11:41:48PM -0500, kamaraju kusumanchi wrote: > How to debug intermittent name resolution failures on a Debian Stretch > machine? [...] > ;; Received 525 bytes from 8.8.8.8#53(8.8.8.8) in 11 ms I take your DNS server is 8.8.8.8 (kids, do we have to hand off eve

intermittent name resolution failures

2018-12-27 Thread kamaraju kusumanchi
How to debug intermittent name resolution failures on a Debian Stretch machine? When it does not work: % dig +trace github.com ; <<>> DiG 9.10.3-P4-Debian <<>> +trace github.com ;; global options: +cmd ;; connection timed out; no servers could be reached When it works