Merge "Add config to use lower of IPv4/IPv6 MTU values" into rvc-qpr-dev am: 85f5802b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12539769

Change-Id: I82b478f4aef060c7664c6d58e6abb9d6a97a0fea