ex4.xml

<devices xmlns="urn:example:network-manager">
  <device>
    <name>rtrA</name>
    <transport>
      <netconf>
        <address>2001:db8::2</address>
        <authentication>
          ...
        </authentication>
        ...
      </netconf>
    </transport>
    <root>
      <modules-state
          xmlns="urn:ietf:params:xml:ns:yang:ietf-yang-library">
        <module>
          <name>ietf-system</name>
          ...
        </module>
      </modules-state>
      <system xmlns="urn:ietf:params:xml:ns:yang:ietf-system">
        ...
      </system>
    </root>
  </device>
  <device>
    <name>rtrB</name>
    <transport>
      <restconf>
        <address>2001:db8::3</address>
        <authentication>
          ...
        </authentication>
        ...
      </restconf>
    </transport>
    <root>
      <modules-state
          xmlns="urn:ietf:params:xml:ns:yang:ietf-yang-library">
        <module>
          <name>ietf-interfaces</name>
          ...
        </module>
      </modules-state>
      <interfaces
          xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces">
        ...
      </interfaces>
    </root>
  </device>
</devices>