Device:

<interfaces xmlns="http://openconfig.net/yang/interfaces">

    <interface{% if operation is defined %} xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" nc:operation="{{operation}}"{% endif %}>

    <interface{% if operation is defined and operation != 'delete' %} xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" nc:operation="{{operation}}"{% endif %}>

        <name>{{name}}</name>

        {% if operation is not defined or operation != 'delete' %}

        <config>

            <name>{{name}}</name>

            {% if operation is defined and operation == 'delete' %}

            <description></description>

            {% else %}

            <description>{{description}}</description>

            <mtu>{{mtu}}</mtu>

        </config>

            {% endif %}

        </config>

    </interface>

</interfaces>