Merge "Add public getter for IpPrefix" into main am: 149868f1b1 am: c715bc95c7 am: 8d8e4aff2e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2802926

Change-Id: I222739ca99eef010c24b277d85c738e5c374e510
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>