} else {
		return family == familyIPv6
	}
}

// chooseIPFromHostInterfaces looks at all system interfaces, trying to find one that is up that
// has a global unicast address (non-loopback, non-link local, non-point2point), and returns the IP.
// addressFamilies determines whether it prefers IPv4 or IPv6
func chooseIPFromHostInterfaces(nw networkInterfacer, addressFamilies AddressFamilyPreference) (net.IP, error) {

		{"dual stack, prefer ipv6", v4v6NetworkInterface{}, preferIPv6, netutils.ParseIPSloppy("2001::10"), ""},
	}

	for _, tc := range testCases {
		ip, err := chooseIPFromHostInterfaces(tc.nw, tc.order)
		if !ip.Equal(tc.expected) {
			t.Errorf("case[%s]: expected %+v, got %+v with err : %v", tc.tcase, tc.expected, ip, err)
		}
		if err != nil && !strings.Contains(err.Error(), tc.errStrFrag) {