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85 lines
1.3 KiB
Groff
85 lines
1.3 KiB
Groff
.\" Generated by Mmark Markdown Processer - mmark.miek.nl
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.TH "COREDNS-HEADER" 7 "July 2021" "CoreDNS" "CoreDNS Plugins"
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.SH "NAME"
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.PP
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\fIheader\fP - modifies the header for responses.
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.SH "DESCRIPTION"
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.PP
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\fIheader\fP ensures that the flags are in the desired state for responses. The modifications are made transparently for
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the client.
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.SH "SYNTAX"
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.PP
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.RS
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.nf
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header {
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ACTION FLAGS...
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ACTION FLAGS...
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}
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.fi
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.RE
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.IP \(bu 4
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\fBACTION\fP defines the state for DNS message header flags. Actions are evaluated in the order they are defined so last one has the
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most precedence. Allowed values are:
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.RS
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.IP \(en 4
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\fB\fCset\fR
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.IP \(en 4
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\fB\fCclear\fR
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.RE
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.IP \(bu 4
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\fBFLAGS\fP are the DNS header flags that will be modified. Current supported flags include:
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.RS
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.IP \(en 4
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\fB\fCaa\fR - Authoritative(Answer)
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.IP \(en 4
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\fB\fCra\fR - RecursionAvailable
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.IP \(en 4
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\fB\fCrd\fR - RecursionDesired
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.RE
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.SH "EXAMPLES"
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.PP
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Make sure recursive available \fB\fCra\fR flag is set in all the responses:
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.PP
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.RS
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.nf
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\&. {
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header {
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set ra
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}
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}
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.fi
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.RE
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.PP
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Make sure "recursion available" \fB\fCra\fR and "authoritative answer" \fB\fCaa\fR flags are set and "recursion desired" is cleared in all responses:
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.PP
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.RS
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.nf
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\&. {
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header {
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set ra aa
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clear rd
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}
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}
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.fi
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.RE
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