Thanks to all! 

вт, 22 янв. 2019 г. в 21:59, Steve Simon <steve@quintile.net>:
my understanding is that this is fine, as long as the other RR’s in the message are processed correctly.

 -Steve


> On 22 Jan 2019, at 5:05 pm, cinap_lenrek@felloff.net wrote:
>
> we do not support edns at all. the Topt rr type is just ignored.
>
> --
> cinap




--
С наилучшими пожеланиями
Жилкин Сергей
With best regards
Zhilkin Sergey