External / public / WAN IP sensor

[eisengrau]

Describe the problem you have/What new integration you would like

External / public / WAN IP sensor. Either a request to a public server that returns the public IP as a text sensor value of the gateway behind which the Esphome device is connected

Please describe your use case for this integration and alternatives you've tried:

HTTP get request to various JSON REST APIs is cumbersome, requires specific lambda configs to use. It should be an easier way.

Additional context

Might be useful for deployments in remote networks where no Home Assistant infrastructure is available, or on a remote network where such Esphome device us used (also) as a standalone network monitoring device.

[111lisu]

I use ESPHome devices via IPSEC. I use double NAT for upgrade, but it is a very inconvenient solution. An IP WAN option would be useful to send the firmware to the OTA. It would be useful too keepalive

[J3bs]

I managed to get this working for myself earlier today so I'm making my way through my browser tabs I left open while searching for a solution. It's a bit late for OP I imagine, but perhaps this will help the next guy.
PS: LOL @ this feature request

Add http_request component, no config necessary

http_request:

Define text_sensor to hold public IP value

text_sensor:
  - platform: template
     name: "Public IP"
     id:  public_ip
     entity_category: "diagnostic"

Add wifi on_connect trigger to run http_request, and populate sensor's value

wifi:
<REMOVED>
  on_connect:
    - http_requeat.send:
        method: get
        url: "http://ipecho.net/plain
        capture_response: true
        on_response:
          then:
            - lambda: |-
                 id(public_ip).publish_state(body);

[ssieb]

How does knowing the external IP of the network help in any way? Who is even going to see the resulting value?

[J3bs]

@ssieb meaning no disrespect, but what is it to you? OP had a need but couldn't figure it out, I had a need and managed to figure it out, so providing the solution here so others seeking a similar solution won't need to work as hard.

If you don't see a benefit, that's perfectly fine, just move along.