new-ip.tmpl

<config>
  <interface-configurations xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ifmgr-cfg">
   <interface-configuration>
    <active>act</active>
    <interface-name>{{INTF}}</interface-name>
    <ipv4-network xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ipv4-io-cfg">
     <addresses>
      <primary>
       <address>{{NEWIP}}</address>
      </primary>
     </addresses>
    </ipv4-network>
   </interface-configuration>
  </interface-configurations>
</config>