The utilities are part of com.android.internal.util, but were historically tested as part of the services.net tests. They were then mistakenly moved to packages/modules/Connectivity with the rest of the networking code, but actually belong in coretests. Bug: 187935317 Test: atest FrameworksCoreTests Change-Id: I74702f6a4d9bed5985d2a830dacd78129a7854a8