buffer.WriteString("fe00::1\tip6-allnodes\n")
	buffer.WriteString("fe00::2\tip6-allrouters\n")
	if len(hostDomainName) > 0 {
		// host entry generated for all IPs in podIPs
		// podIPs field is populated for clusters even
		// dual-stack feature flag is not enabled.
		for _, hostIP := range hostIPs {
			buffer.WriteString(fmt.Sprintf("%s\t%s.%s\t%s\n", hostIP, hostName, hostDomainName, hostName))
		}

				t.Errorf("Could not unmarshal destination rule: %v", err)
			}
			ca := dr.TrafficPolicy.Tls.CaCertificates
			if ca != tt.expectedCaCertificateName {
				t.Errorf("%v: got unexpected caCertitifcates field. Expected (%v), received (%v)", tt.name, tt.expectedCaCertificateName, ca)
			}
		})
	}
}

func TestApplyTCPKeepalive(t *testing.T) {
	cases := []struct {
		name           string