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root servers

Q. My local nameserver root zone file is outdated. It has no information about IPv6 and recently changed root server IP address. How do I update my root hints data file under Debian and Red Hat Bind 9 server?
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DNS Name Resolution

Q. Can you explain DNS name resolution concept? Why I need to set DNS resolution for my Windows or Linux server? How do I setup DNS name resolution under Linux / UNIX server system?
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