Merge "Deflake testRaRdnss."

        waitForRouterSolicitation();

        mPacketReader.sendResponse(ra);

        InOrder inOrder = inOrder(mCb);

        ArgumentCaptor<LinkProperties> captor = ArgumentCaptor.forClass(LinkProperties.class);

        verify(mCb, timeout(TEST_TIMEOUT_MS)).onProvisioningSuccess(captor.capture());

        inOrder.verify(mCb, timeout(TEST_TIMEOUT_MS)).onProvisioningSuccess(captor.capture());

        LinkProperties lp = captor.getValue();

        // Sometimes provisioning completes as soon as the link-local and the stable address appear,

        // before the privacy address appears. If so, wait here for the LinkProperties update that

        // contains the privacy address. Otherwise, future calls to verify() might get confused.

        // TODO: move this code to a more general startIpv6Provisioning method so we can write more

        // IPv6 tests without duplicating this complexity.

        if (lp.getLinkAddresses().size() == 2) {

            inOrder.verify(mCb, timeout(TEST_TIMEOUT_MS)).onLinkPropertiesChange(

                    argThat(x -> x.getLinkAddresses().size() == 3));

        }

        // Expect that DNS servers with lifetimes below CONFIG_MIN_RDNSS_LIFETIME are not accepted.

        assertNotNull(lp);

        assertEquals(1, lp.getDnsServers().size());

        assertTrue(lp.getDnsServers().contains(InetAddress.getByName(dnsServer)));

        reset(mCb);

        // If the RDNSS lifetime is above the minimum, the DNS server is accepted.

        rdnss1 = buildRdnssOption(68, lowlifeDnsServer);

        ra = buildRaPacket(pio, rdnss1, rdnss2);

        mPacketReader.sendResponse(ra);

        verify(mCb, timeout(TEST_TIMEOUT_MS)).onLinkPropertiesChange(captor.capture());

        inOrder.verify(mCb, timeout(TEST_TIMEOUT_MS)).onLinkPropertiesChange(captor.capture());

        lp = captor.getValue();

        assertNotNull(lp);

        assertEquals(2, lp.getDnsServers().size());

        assertTrue(lp.getDnsServers().contains(InetAddress.getByName(dnsServer)));

        assertTrue(lp.getDnsServers().contains(InetAddress.getByName(lowlifeDnsServer)));

        reset(mCb);

        // Expect that setting RDNSS lifetime of 0 causes loss of provisioning.

        rdnss1 = buildRdnssOption(0, dnsServer);

        ra = buildRaPacket(pio, rdnss1, rdnss2);

        mPacketReader.sendResponse(ra);

        verify(mCb, timeout(TEST_TIMEOUT_MS)).onProvisioningFailure(captor.capture());

        inOrder.verify(mCb, timeout(TEST_TIMEOUT_MS)).onProvisioningFailure(captor.capture());

        lp = captor.getValue();

        assertNotNull(lp);

        assertEquals(0, lp.getDnsServers().size());