DNS Flag Day, Friday, Feb 1st, 2019

Thu Jan 31 02:07:58 UTC 2019

This basically affects sites using really old Windows DNS servers (Microsoft decided to make them only respond once with FORMERR so if that message is lost they appear to be dead until the timer clears) and those using firewalls that block EDNS queries.  If you use such firewalls they are really doing nothing useful. 

Most of the other errors reported are benign as far as DNS flag day is concerned. 

Also apart from the public DNS resolvers people need to install updated software that has the work arounds removed.

Mark
-- 
Mark Andrews

> On 31 Jan 2019, at 12:22, Matthew Petach <mpetach at netflight.com> wrote:
> 
> 
> 
>> On Wed, Jan 23, 2019 at 4:12 PM Brian Kantor <Brian at ampr.org> wrote:
>> Quoting from the web site at 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.
> 
> 
> I would like to note that there is an entire 
> segment of the population that does not 
> interact with technology between sundown 
> on Friday, all the way through Sunday 
> morning.
> 
> Choosing Friday as a day to carry out an 
> operational change of this sort does not 
> seem to have given thought that if things 
> break, there is a possibility they will have 
> to stay broken for at least a full day before 
> the right people can be engaged to work on 
> the issue. 
> 
> In the future, can we try to schedule such events 
> with more consideration on which day the change 
> will take place?
> 
> I will also note that this weekend is the Superbowl 
> in the US; one of the bigger advertising events of the 
> year.  Potentially breaking advertising systems that 
> rely on DNS two days before a major, once-a-year 
> advertising event is *also* somewhat inconsiderate. 
> 
> While I understand that no day will work for everyone, 
> and at some point you just have to pick a day and go 
> for it, I will note that picking the Friday before the 
> Superbowl does seem like a very unfortunate random 
> pick for a day on which to do it. 
> 
> Any chance this could wait until say the Tuesday 
> *after* the Superbowl, when we aren't cutting an 
> entire religion's worth of potential workers out of 
> the workforce available to fix issues in case it 
> turns out to be a bigger problem than is expected, 
> and when we have less chance of annoying the 
> vast army of football-loving fans of every sort? 
> 
> Thanks!
> 
> Matt
> 
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