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Use the following options to alter Database-related settings.
| Configuration option = Default value | Description | 
|---|---|
| [DEFAULT] | |
| advertise_mtu=False | (BoolOpt) If True, effort is made to advertise MTU settings to VMs via network methods (DHCP and RA MTU options) when the network's preferred MTU is known. | 
| dnsmasq_config_file= | (StrOpt) Override the default dnsmasq settings with this file | 
| dnsmasq_dns_servers=None | (ListOpt) Comma-separated list of the DNS servers which will be used as forwarders. | 
| dnsmasq_lease_max=16777216 | (IntOpt) Limit number of leases to prevent a denial-of-service. | 
| enable_isolated_metadata=False | (BoolOpt) Support Metadata requests on isolated networks. | 
| enable_metadata_network=False | (BoolOpt) Allows for serving metadata requests from a dedicated network. Requires enable_isolated_metadata = True | 
| num_sync_threads=4 | (IntOpt) Number of threads to use during sync process. | 
| resync_interval=5 | (IntOpt) Interval to resync. | 
| use_namespaces=True | (BoolOpt) Allow overlapping IP. This option is deprecated and will be removed in a future release. | 



