subnet list does not print dns servers and hostnames properly

openstack@openstack:~/devstack$ quantum subnet-list
+--------------------------------------------+-------------+------------------+-------------+------------+-------------+--------------------------------------+------------+------+--------------------------------------+----------------------------------+
| allocation_pools | cidr | dns_nameservers | enable_dhcp | gateway_ip | host_routes | id | ip_version | name | network_id | tenant_id |
+--------------------------------------------+-------------+------------------+-------------+------------+-------------+--------------------------------------+------------+------+--------------------------------------+----------------------------------+
| {"start": "10.0.0.2", "end": "10.0.0.254"} | 10.0.0.0/24 | [u'10.10.10.10'] | True | 10.0.0.1 | [] | 4fba3d20-18e8-4737-9323-8dbd64f18bdc | 4 | | 53e14589-c2e9-49bb-8c27-1f2417160d1a | cbadeaa115ed4821915091d3b6bab766 |
+--------------------------------------------+-------------+------------------+-------------+------------+-------------+--------------------------------------+------------+------+--------------------------------------+----------------------------------+

The list has [u'10.10.10.10'] instead of ['10.10.10.10']