Merge "Speculatively fix L2TP keepalive issues by reducing mtu" am: 7ade6140ea

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1399646

Change-Id: Iac7fc24c531db663469df1b1161d9f85a4c6f3ee
tree: 57733c77ddb5ac9f5988337a41c96278d6ef492d
  1. core/
  2. services/
  3. tests/