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man: use literal tag
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@ -227,10 +227,10 @@
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<varlistentry>
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<term><varname>Cache=</varname></term>
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<listitem><para>Takes a boolean argument. If "yes" (the default), resolving a domain name which already got
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queried earlier will return the previous result as long as it is still valid, and thus does not result in a new
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network request. Be aware that turning off caching comes at a performance penalty, which is particularly
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high when DNSSEC is used.</para>
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<listitem><para>Takes a boolean argument. If <literal>yes</literal> (the default), resolving a domain name
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which already got queried earlier will return the previous result as long as it is still valid, and thus does
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not result in a new network request. Be aware that turning off caching comes at a performance penalty, which
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is particularly high when DNSSEC is used.</para>
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<para>Note that caching is turned off implicitly if the configured DNS server is on a host-local IP address
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(such as 127.0.0.1 or ::1), in order to avoid duplicate local caching.</para></listitem>
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