33 lines
1.8 KiB
Go
33 lines
1.8 KiB
Go
package main
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/*
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https://pkg.go.dev/github.com/miekg/dns#section-readme
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DYNAMIC UPDATES
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Dynamic updates reuses the DNS message format, but renames three of the sections. Question is Zone, Answer is Prerequisite, Authority is Update, only the Additional is not renamed. See RFC 2136 for the gory details.
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You can set a rather complex set of rules for the existence of absence of certain resource records or names in a zone to specify if resource records should be added or removed. The table from RFC 2136 supplemented with the Go DNS function shows which functions exist to specify the prerequisites.
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3.2.4 - Table Of Metavalues Used In Prerequisite Section
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CLASS TYPE RDATA Meaning Function
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--------------------------------------------------------------
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ANY ANY empty Name is in use dns.NameUsed
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ANY rrset empty RRset exists (value indep) dns.RRsetUsed
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NONE ANY empty Name is not in use dns.NameNotUsed
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NONE rrset empty RRset does not exist dns.RRsetNotUsed
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zone rrset rr RRset exists (value dep) dns.Used
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The prerequisite section can also be left empty. If you have decided on the prerequisites you can tell what RRs should be added or deleted. The next table shows the options you have and what functions to call.
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3.4.2.6 - Table Of Metavalues Used In Update Section
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CLASS TYPE RDATA Meaning Function
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---------------------------------------------------------------
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ANY ANY empty Delete all RRsets from name dns.RemoveName
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ANY rrset empty Delete an RRset dns.RemoveRRset
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NONE rrset rr Delete an RR from RRset dns.Remove
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zone rrset rr Add to an RRset dns.Insert
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*/
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