Snap for 6488384 from 5c5a6898 to rvc-release

        // Force NetworkStack.getService() to return null: this cannot be done with

        // Force NetworkStack.getService() to return null: this cannot be done with

        // setServiceForTest, as passing null just restores default behavior.

        // setServiceForTest, as passing null just restores default behavior.

        val session = mockitoSession().spyStatic(NetworkStack::class.java).startMocking()

        val session = mockitoSession().spyStatic(NetworkStack::class.java).startMocking()

        try {

            doReturn(null).`when` { NetworkStack.getService() }

            doReturn(null).`when` { NetworkStack.getService() }

            ModuleNetworkStackClient.getInstance(mContext).makeIpClient(TEST_IFNAME, mIpClientCb)

            ModuleNetworkStackClient.getInstance(mContext).makeIpClient(TEST_IFNAME, mIpClientCb)

            Thread.sleep(TEST_TIMEOUT_MS)

            Thread.sleep(TEST_TIMEOUT_MS)

            verify(mConnector, never()).makeIpClient(any(), any())

            verify(mConnector, never()).makeIpClient(any(), any())

            NetworkStack.setServiceForTest(mConnectorBinder)

            NetworkStack.setServiceForTest(mConnectorBinder)

        } finally {

            // Restore behavior of NetworkStack to return what was set in setServiceForTest

            // Restore behavior of NetworkStack to return what was set in setServiceForTest

            session.finishMocking()

            session.finishMocking()

        }

        // Use a longer timeout as polling can cause larger delays

        // Use a longer timeout as polling can cause larger delays

        verify(mConnector, timeout(TEST_TIMEOUT_MS * 4)).makeIpClient(TEST_IFNAME, mIpClientCb)

        verify(mConnector, timeout(TEST_TIMEOUT_MS * 4)).makeIpClient(TEST_IFNAME, mIpClientCb)