Merge "Add public getter for IpPrefix" into main am: 149868f1b1 am: 3c2646c6fe

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

Change-Id: I0dbb4bf128cb97f6f7f9c60d05f5a8a795284948
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>