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

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

Change-Id: Ifa6826bafbc68a03f1beccd026df9086c1fa7705
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>