BIND is open source software that implements the Domain Name System (DNS) protocols for the Internet. It is a reference implementation of those protocols, but it is also production-grade software, suitable for use in high-volume and high-reliability applications. The name BIND stands for Berkeley Internet Name Domain, because the software originated in the early 1980s at the University of California at Berkeley.
since 4.3.5, Qnap firmware is using dnsmasq bridged to resolv.conf and using port 53 by default, you need to tweak configuration to make bind works properly
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