This is a follow-up commit from aosp/2076483. Mainly to update: 1. Update the hex string to human understandable code instead of byte code. 2. Use IgnoreUpTo() to do the SDK check 3. Avoid relying on the code being tested Bug: 192078259 Test: atest FrameworksNetTests Change-Id: I8973d248a1d30fdcb597677dbf051e146041f905