var cidrList []string
	var cidrs []string
	var expected []string
	cidrs = filterCIDRs(true, []string{})
	if len(cidrs) > 0 {
		t.Errorf("An empty list produces a non-empty return %v", cidrs)
	}

	cidrList = []string{"1000::/64", "10.0.0.0/16", "11.0.0.0/16", "2000::/64"}
	expected = []string{"1000::/64", "2000::/64"}
	cidrs = filterCIDRs(true, cidrList)
	if !reflect.DeepEqual(cidrs, expected) {