Modular Layer 2 (ml2) GRE Type configuration options

Table 7.13. Description of configuration options for ml2_gre
Configuration option = Default value	Description
[ml2_type_gre]
tunnel_id_ranges =	(ListOpt) Comma-separated list of <tun_min>:<tun_max> tuples enumerating ranges of GRE tunnel IDs that are available for tenant network allocation