Add IPv6 to WifiInfoSensor

[h3mmy]

Is your feature request related to a problem? Please describe.

My core personal issue is that my phone regularly drops it's IPv6 address. This drives me nuts. I want to be able to detect when this happens and automatically cycle the wifi to regain an IPv6 assignment. I thought, well Home Assistant should have access to this data and is always running on my phone anyway. After checking the sensor for WifiInfo wifi_ip_address, I noted it was only the IPv4 address. This struck me as odd. I went to check the code in case there was a hidden option that I maybe missed.

This was not the case. It turns out that the companion app only retrieves the IPv4 address and additionally relies on a deprecated (as of version 31) way to get the address.

https://github.com/home-assistant/android/blob/master/common/src/main/java/io/homeassistant/companion/android/common/sensors/NetworkSensorManager.kt#L345

Describe the solution you'd like

Update the NetworkSensorManager to use LinkAddress to retrieve the inet addresses and display both types of addresses as part of the wifiInfo sensor. I am happy to open a PR for this change as well.

Describe alternatives you've considered, if any

Doing it manually instead of using home-assistant. I feel like the simple check and cycle is exactly the kind of automation that fits the goals of the home-assistant project.

Additional context

I am happy to make the code changes, which should be rather minimal. Just want a go ahead from someone before putting in the work.

[dshokouhi]

The current sensor is designed to show the IPv4 address. If you would like to add one for IPv6 please make sure its a new sensor 😃 . The other sensor needs to continue to use the deprecated method to support older devices but a new sensor can be setup to show the IPv6 address as its state.

[h3mmy]

That seems reasonable to me. It'll probably take me a little extra fiddling to get it right, but I can get working on that then. Thanks for the quick response!

[h3mmy]

This might be a silly question, but is there somewhere specific I can add unit tests to? I'm not able to find the testcase files in the repository.

[jpelgrom]

This might be a silly question, but is there somewhere specific I can add unit tests to? I'm not able to find the testcase files in the repository.

There are currently no unit tests in the project.