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from netaddr import IPAddress


def test_reverse_dns_v4():
    assert IPAddress('172.24.0.13').reverse_dns == '13.0.24.172.in-addr.arpa.'


def test_reverse_dns_v6():
    assert IPAddress('fe80::feeb:daed').reverse_dns == ('d.e.a.d.b.e.e.f.0.0.0.0.0.0.0.0.'
                                                       '0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.'
                                                       'ip6.arpa.')