Merge "Clear IPv4 offload rules when tethering stopped" am: 7238b31c15 am: 70504b2f6b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1579873

Change-Id: Ibfea3e14e0e06a59c3b29534ab5ffbf4d4bd2148