for rev in ['10.1.0.0/16', '10.2.0.0/16', 'fd12:3456:789a::/48']:
rz = nsc.add_reverse_zone(rev)
rz[""].NS(['ns1.example.org', 'ns2.example.org'])
for rev in ['10.1.0.0/16', '10.2.0.0/16', 'fd12:3456:789a::/48']:
rz = nsc.add_reverse_zone(rev)
rz[""].NS(['ns1.example.org', 'ns2.example.org'])