@Test
    void pickAddressInternal_nonDiscovery_unresolved() {
        NonDiscoveryServer s = new NonDiscoveryServer("localhost", 443);

        SocketAddress addr = DefaultClientChannelManager.pickAddressInternal(s, OriginName.fromVip("vip"));

        Truth.assertThat(addr).isInstanceOf(InetSocketAddress.class);
        InetSocketAddress socketAddress = (InetSocketAddress) addr;

        assertTrue(socketAddress.getAddress().isLoopbackAddress(), socketAddress.toString());
        assertEquals(443, socketAddress.getPort());
    }
Tests for {@link DefaultClientChannelManager}.  These tests don't use IPv6 addresses because {@link InstanceInfo} is
not capable of expressing them.
zuul-core/src/test/java/com/netflix/zuul/netty/connectionpool/DefaultClientChannelManagerTest.java