Values:
PROBING_RESULT_UNSPECIFIED (0):
No result was specified.
REACHABLE (1):
At least 95% of packets reached the
destination.
UNREACHABLE (2):
No packets reached the destination.
REACHABILITY_INCONSISTENT (3):
Less than 95% of packets reached the
destination.
UNDETERMINED (4):
Reachability could not be determined. Possible reasons are:
- The user lacks permission to access some of the network
resources required to run the test.
- No valid source endpoint could be derived from the
request.
- An internal error occurred.