JFR: TestNetworkUtilizationEvent.java expects 2+ Network interfaces on Linux but finding 1

The following test fails in the JDK14 CI:

jdk/jfr/event/runtime/TestNetworkUtilizationEvent.java

Here's a snippet from the log file:

----------System.out:(8/131)----------
jdk.NetworkUtilization {
  startTime = 01:16:17.471
  networkInterface = "lo"
  readRate = 508.6 kbps
  writeRate = 508.6 kbps
}


----------System.err:(16/1099)----------
java.lang.RuntimeException: assertGreaterThanOrEqual: expected 1 >= 2
at jdk.test.lib.Asserts.fail(Asserts.java:594)
at jdk.test.lib.Asserts.assertGreaterThanOrEqual(Asserts.java:288)
at jdk.test.lib.Asserts.assertGreaterThanOrEqual(Asserts.java:271)
at jdk.jfr.event.runtime.TestNetworkUtilizationEvent.main(TestNetworkUtilizationEvent.java:98)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:830)

JavaTest Message: Test threw exception: java.lang.RuntimeException: assertGreaterThanOrEqual: expected 1 >= 2
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: assertGreaterThanOrEqual: expected 1 >= 2
----------rerun:(34/5688)*----------