def METHOD_NAME():
    valid_ips = ['129.241.75.1', '10.0.25.62', '2001:700:1::abcd', 'fe80::baad']
    invalid_ips = ['www.uninett.no', '92835235', '5:4', '-5325']
    for ip in valid_ips:
        assert util.is_valid_ip(ip), "%s should be valid" % ip
    for ip in invalid_ips:
        assert not util.is_valid_ip(ip), "%s should be invalid" % ip