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| Configuration option = Default value | Description | 
|---|---|
| [ml2_type_vlan] | |
network_vlan_ranges =  | 
        (ListOpt) List of <physical_network>:<vlan_min>:<vlan_max> or <physical_network> specifying physical_network names usable for VLAN provider and tenant networks, as well as ranges of VLAN tags on each available for allocation to tenant networks. | 

