Merge "Disable IPv6 stack when IPv6 provisioning is lost but IPv4 is still...

Merge "Disable IPv6 stack when IPv6 provisioning is lost but IPv4 is still alive." into rvc-dev am: 49053ad5 am: f152f468

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/11807300

Change-Id: I033101e9ad4b4f17d105751816d80be0487f2ced