} else if pol == api.IPFamilyPolicyPreferDualStack && fams != clus {
			t.Errorf("%s: expected %d ipFamilies, got %d", callName(before, after), clus, fams)
		}
	}

	if before != nil {
		if before.Spec.ClusterIP != "" {
			if want, got := before.Spec.ClusterIP, after.Spec.ClusterIP; want != got {
				t.Errorf("%s: wrong clusterIP: wanted %q, got %q", callName(before, after), want, got)