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Bind9 dns zone not updating

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In fact, these two latter servers will ever be referred to in the configuration because the xxxbox will be in charge of resolving names if the packet destination isn't known.

It associates various information with domain names assigned to each of the participating entities.Since we have received 2 nameservers, we ask each of them whether they give authoritative answer.If it's authoritative 'aa' flag in the header will be set in the answer received ('aa' is authoritative answer). flags: qr aa rd Since 'aa' is set in the answer, then both the nameservers of provide authoritative answer.Understanding DNS and its working is one of the most difficult computer engineering subject and yet most experienced network administrators struggle in this topic when it comes to DNS zone file writing. (see RFC 1912 section 2.3) In the above example we are mapping each NS records to IP address (A record) thus binding nameservers to IP (that is glue them).Before I proceed with this article, the following are the MOST IMPORTANT points you should remember as otherwise you wouldnt understand bit. An A Record must ALWAYS contain IP address (map host to IP) Whenever you specify A record it must contain IP address on the Right side. A nameserver which gives non-authoritative answer is usually called 'LAME'. An example of lame delegation is ns1.is configured to have zone information about domain but ns2.was not configured properly and does not have any information about the domain.Putting a DNS server on a network allows for the replacement of IP addresses of individual machines by a name.