Send notification when IP (global) changed

Configuration
13

I also wanted to try -> THIS INSTRUCTION <-, but this is not working for me.
What I’m doing wrong?

alias: Send iPhone notification when external IP changed
description: Automation to send notification to iPhone when external IP changed
trigger:
  - platform: state
    entity_id: sensor.external_ip
condition:
  - condition: template
    value_template: >-
      {% if trigger.from_state.state and trigger.to_state.state %} true {% else %} false {%
      endif %}
  - condition: template
    value_template: >-
      {% if trigger.from_state.state == 'unknown' %} false {% else %} true {%
      endif %}
  - condition: template
    value_template: >-
      {% if trigger.to_state.state == 'unknown' %} false {% else %} true {%
      endif %}
  - condition: template
    value_template: '{{ trigger.from_state.state != trigger.to_state.state }}'
action:
  - service: notify.mobile_app_dpiphone8
    data:
      title: Your External IP address has changed
      message: >-
        Your External IP changed from {{ 'trigger.from_state.state' }} to {{
        'trigger.to_state.state' }}
mode: single

The result of the message is strange:

ip