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 - Copyright (C) 2018  Internet Systems Consortium, Inc. ("ISC")
 -
 - This Source Code Form is subject to the terms of the Mozilla Public
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<!-- Generated by doc/misc/docbook-options.pl -->

<programlisting>
<command>masters</command> <replaceable>string</replaceable> [ port <replaceable>integer</replaceable> ] [ dscp
    <replaceable>integer</replaceable> ] { ( <replaceable>masters</replaceable> | <replaceable>ipv4_address</replaceable> [
    <command>port</command> <replaceable>integer</replaceable> ] | <replaceable>ipv6_address</replaceable> [ port
    <replaceable>integer</replaceable> ] ) [ key <replaceable>string</replaceable> ]; ... };
</programlisting>
