1. watchA
CISCO bug https://quickview.cloudapps.cisco.com/quickview/bug/CSCvr89250
2. history
Query name minimization and authoritative DNS server behavior
Shumon Huque, Verisign Labs DNS-OARC 2015 Spring Workshop, Amsterdam, Netherlands May 9th 2015
https://indico.dns-oarc.net/event/21/contributions/298/attachments/267/487/qname-min.pdf
1.1.1.1 Fails to resolve for doileak.com test
https://community.cloudflare.com/t/1-1-1-1-fails-to-resolve-for-doileak-com-test/16212