[dns-operations] RFC7816 - do not remove

[Anand Buddhdev]

On 18/12/2017 09:15, T.Suzuki wrote:

> What's this? :-)
> 
> ~% drill txt elb.amazonaws.com @r1.amazonaws.com
> ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 4102
> ;; flags: qr aa rd ; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4 
> ;; QUESTION SECTION:
> ;; elb.amazonaws.com.	IN	TXT
> 
> ;; ANSWER SECTION:
> elb.amazonaws.com.	300	IN	TXT	"RFC7816 - do not remove"

A few days ago, someone complained, on Twitter, about Amazon breaking
QNAME minimisation by answering NXDOMAIN for ENTs. I think this may be
their (temporary) fix.

Regards,
Anand