The thing is even if you have multiple name servers, if the request NS does not time out, the client will not then move onto the next NS .
I am unsure about the specifics Optus incident I have it before where a site has its forwarders set to a central location. The site has local internet connectivity and connectivity to the central location but the central location lost its internet link. Although. Multiple forwarders were set, because the central ones were at the top of the list and were able to be contacted but could not resolve anything, the site on the edge was unable to browse the web. On 5 Jul. 2017 4:42 pm, "Narelle" <narel...@gmail.com> wrote: > Well, my home gateway points at more than one DNS... as should all > home gateways... ns1.<providername>.au ns2.<providername>.au (from > memory) google-public-dns-a.google.com ... > > So was ns1.optusnet.com.au *and* ns2.optusnet.com.au down? Or both being > DoSsed? > > One can't help wondering about dhcp settings... and redundancy > architectures... > > On Wed, Jul 5, 2017 at 2:12 PM, Jason Firmino <jason.firm...@gmail.com> > wrote: > > I was just watching some youtube tutorials on my phone and completely > lost > > connection. No DNS nothing... > > Tried to access the web. Nothing. > > > > Rebooted the router. Didn't work. So as I didn't have any patience to > debug > > after a hard day at work, I just went to sleep with the hopes of it being > > restored once I woke up. > > > > And so it was :D > > > > Cheers, > > > > On Wed, 5 Jul 2017 at 14:07 A <clonemeag...@gmail.com> wrote: > >> > >> That's a very effective torrent blocker they've implemented. Kudos > Optus! > >> > >> On 5 July 2017 at 13:52, Nathan Brookfield > >> <nathan.brookfi...@simtronic.com.au> wrote: > >>> > >>> DNS servers weren't responding to requests in any way. > >>> > >>> > >>> Kindest Regards, > >>> > >>> Nathan Brookfield (VK2NAB) > >>> > >>> > >>> > >>> Chief Executive Officer > >>> > >>> Simtronic Technologies Pty Ltd > >>> > >>> > >>> > >>> Local: (02) 4749 4949 | Fax: (02) 4749 4950 | Direct: (02) 4749 4951 > >>> > >>> Web: http://www.simtronic.com.au | E-mail: > >>> nathan.brookfi...@simtronic.com.au > >>> > >>> > >>> > >>> ________________________________ > >>> From: AusNOG <ausnog-boun...@lists.ausnog.net> on behalf of Narelle > >>> <narel...@gmail.com> > >>> Sent: Wednesday, 5 July 2017 1:49 PM > >>> To: aus...@ausnog.net > >>> Subject: [AusNOG] Optus outage last night? > >>> > >>> Did anyone notice what exactly happened with Optus services last night? > >>> > >>> I admit - it didn't interrupt my viewing of streaming TV... but there > >>> is a lot in the media, so wondering what exactly it was. > >>> > >>> > >>> -- > >>> > >>> > >>> Narelle > >>> narel...@gmail.com > >>> _______________________________________________ > >>> AusNOG mailing list > >>> AusNOG@lists.ausnog.net > >>> http://lists.ausnog.net/mailman/listinfo/ausnog > >>> > >>> _______________________________________________ > >>> AusNOG mailing list > >>> AusNOG@lists.ausnog.net > >>> http://lists.ausnog.net/mailman/listinfo/ausnog > >>> > >> > >> _______________________________________________ > >> AusNOG mailing list > >> AusNOG@lists.ausnog.net > >> http://lists.ausnog.net/mailman/listinfo/ausnog > > > > -- > > > Narelle > narel...@gmail.com > _______________________________________________ > AusNOG mailing list > AusNOG@lists.ausnog.net > http://lists.ausnog.net/mailman/listinfo/ausnog >
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