ClickHouse/tests/integration/test_user_ip_restrictions/configs/users_ipv6.xml

<yandex>
    <profiles>
        <default>
            <max_memory_usage>10000000000</max_memory_usage>
            <use_uncompressed_cache>0</use_uncompressed_cache>
            <load_balancing>random</load_balancing>
        </default>
    </profiles>

    <users>
        <default>
            <password></password>
            <networks incl="networks" replace="replace">
                <ip>2001:3984:3989:0:0:0:1:1111</ip>
                <ip>2001:3984:3989:0:0:0:0:0/112</ip>
            </networks>
            <profile>default</profile>
            <quota>default</quota>
        </default>
    </users>

    <quotas>
        <default>
        </default>
    </quotas>
</yandex>