// IPv4 only
			c.DnsLookupFamily = cluster.Cluster_V4_ONLY
		} else if networkutil.AllIPv6(cb.proxyIPAddresses) {
			// IPv6 only
			c.DnsLookupFamily = cluster.Cluster_V6_ONLY
		} else {
			// Dual Stack
			if features.EnableDualStack {
				// using Cluster_ALL to enable Happy Eyeballsfor upstream connections
				c.DnsLookupFamily = cluster.Cluster_ALL
			} else {

			if defaultCluster.build().DnsLookupFamily != tt.expectedFamily {
				t.Errorf("Unexpected DnsLookupFamily, got: %v, want: %v", defaultCluster.build().DnsLookupFamily, tt.expectedFamily)
			}
		})
	}
}

func TestBuildLocalityLbEndpoints(t *testing.T) {
	proxy := &model.Proxy{