Android P without TLS: network-security-config: cleartextTrafficPermitted not possible for IP (only domain)

It's working with <base-config cleartextTrafficPermitted="true"> for IP addresses.

(Of course it also needs to be true not false).

I know that this question has been answered and accepted, but if anyone needs to allow all cleartext traffic in the app (for all URLS), then the following line can be added to the application tag:

<application
    ...
    android:usesCleartextTraffic="true">
    ....
</application>

If your minSdkVersion is below 23, where this attribute was introduced, Android Studio will tell you:

Attribute usesCleartextTraffic is only used in API level 23 and higher (current min is ...)

However, as far as I have experienced, the "android:usesCleartextTraffic" attribute will simply be ignored on SDK's below 23.

This flag is ignored on Android 7.0 (API level 24) and above if an Android Network Security Config is present (link)