[AusNOG] DNS problems resolving sync.deakin.edu.au

[Saxton, Joseph (SYD-FED)]

If it’s only changed recently then I’d say DNS propagation

From: AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of John Mann <john at mannfamily.org>
Date: Wednesday, 28 November 2018 at 3:44 pm
To: "AusNOG at lists.ausnog.net" <AusNOG at lists.ausnog.net>
Subject: [EXTERNAL] [AusNOG] DNS problems resolving sync.deakin.edu.au

Hi,

Deakin University recently dual-stacked their Akamai cache for  sync.deakin.edu.au<https://urldefense.proofpoint.com/v2/url?u=http-3A__sync.deakin.edu.au&d=DwMFaQ&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=srheiojgNn4Jg0keeQ9hj6cyp8zgHx0m-eTRLdD3nnw&m=aVUTlDm-TpQmLPh8GYduaIdrwFkUij4wtBrv-X9yJz4&s=oyHoAo4mklGmb_jm-rzKYPvvofKEu68LWO4doCFkURg&e=> .

Since them, some students using a couple of ISPs can't resolve the DNS name.
For example:
---
> nslookup sync.deakin.edu.au<https://urldefense.proofpoint.com/v2/url?u=http-3A__sync.deakin.edu.au&d=DwMFaQ&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=srheiojgNn4Jg0keeQ9hj6cyp8zgHx0m-eTRLdD3nnw&m=aVUTlDm-TpQmLPh8GYduaIdrwFkUij4wtBrv-X9yJz4&s=oyHoAo4mklGmb_jm-rzKYPvvofKEu68LWO4doCFkURg&e=>
Server:  belong.gateway
Address:  10.0.0.138

*** belong.gateway can't find sync.deakin.edu.au<https://urldefense.proofpoint.com/v2/url?u=http-3A__sync.deakin.edu.au&d=DwMFaQ&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=srheiojgNn4Jg0keeQ9hj6cyp8zgHx0m-eTRLdD3nnw&m=aVUTlDm-TpQmLPh8GYduaIdrwFkUij4wtBrv-X9yJz4&s=oyHoAo4mklGmb_jm-rzKYPvvofKEu68LWO4doCFkURg&e=>: Non-existent domain
---
"blogs.deakin.edu.au<https://urldefense.proofpoint.com/v2/url?u=http-3A__blogs.deakin.edu.au&d=DwMFaQ&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=srheiojgNn4Jg0keeQ9hj6cyp8zgHx0m-eTRLdD3nnw&m=aVUTlDm-TpQmLPh8GYduaIdrwFkUij4wtBrv-X9yJz4&s=yFkD80CkEe2Z-d4Pp3L8fWNbGaFEpnm7FGr0j6Jy6bc&e=>" is setup similarly to "sync.deakin.edu.au<https://urldefense.proofpoint.com/v2/url?u=http-3A__sync.deakin.edu.au&d=DwMFaQ&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=srheiojgNn4Jg0keeQ9hj6cyp8zgHx0m-eTRLdD3nnw&m=aVUTlDm-TpQmLPh8GYduaIdrwFkUij4wtBrv-X9yJz4&s=oyHoAo4mklGmb_jm-rzKYPvvofKEu68LWO4doCFkURg&e=>" but that does work.

If the user changes their DNS server to 8.8.8.8 or 1.1.1.1 then they do get through.

Problematic ISPs include:
   Belong
   Aussie Broadband
   ...
I've tried the frontline technical support numbers, but didn't make much headway.

Does anyone know how/why this DNS problems would be happening?

Can some technical support people from ABB and Belong please contact me?

Thanks,
     John Mann
     0419 568 470

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