[AusNOG] DNS Flag Day - 1st February

Mark Andrews marka at isc.org
Thu Jan 24 14:42:47 EST 2019

This basically means recursive server will no longer work around:

* Old Windows DNS servers as the don’t return FORMERR to *all* EDNS queries.

* Firewalls that block EDNS or EDNS with a DNS COOKIE option queries.

> On 24 Jan 2019, at 2:12 pm, Philip Loenneker <Philip.Loenneker at tasmanet.com.au> wrote:
> Hi all,
> I saw this mentioned on NANOG (thanks Brian Kantor) and hadn’t seen it anywhere else so thought I would raise it here for anyone else who may not be aware.
> Quoting https://dnsflagday.net/
>   The current DNS is unnecessarily slow and suffers from inability     
>   to deploy new features. To remediate these problems, vendors of
>   DNS software and also big public DNS providers are going to
>   remove certain workarounds on February 1st, 2019.
> You can get more information and check your domain for any DNS issues that may be impacted by this change from the dnsflagday.netsite.
> Regards,
> Philip Loenneker | Network Engineer | TasmaNet
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka at isc.org

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