Description of network configuration options

Configuration option = Default value	Description
[DEFAULT]
allow_same_net_traffic = True	(BoolOpt) Whether to allow network traffic from same network
auto_assign_floating_ip = False	(BoolOpt) Autoassigning floating IP to VM
cnt_vpn_clients = 0	(IntOpt) Number of addresses reserved for vpn clients
create_unique_mac_address_attempts = 5	(IntOpt) Number of attempts to create unique mac address
default_access_ip_network_name = None	(StrOpt) Name of network to use to set access IPs for instances
default_floating_pool = nova	(StrOpt) Default pool for floating IPs
defer_iptables_apply = False	(BoolOpt) Whether to batch up the application of IPTables rules during a host restart and apply all at the end of the init phase
dhcp_domain = novalocal	(StrOpt) Domain to use for building the hostnames
dhcp_lease_time = 86400	(IntOpt) Lifetime of a DHCP lease in seconds
dhcpbridge = $bindir/nova-dhcpbridge	(StrOpt) Location of nova-dhcpbridge
dhcpbridge_flagfile = ['/etc/nova/nova-dhcpbridge.conf']	(MultiStrOpt) Location of flagfiles for dhcpbridge
dns_server = []	(MultiStrOpt) If set, uses specific DNS server for dnsmasq. Can be specified multiple times.
dns_update_periodic_interval = -1	(IntOpt) Number of seconds to wait between runs of updates to DNS entries.
dnsmasq_config_file =	(StrOpt) Override the default dnsmasq settings with this file
ebtables_exec_attempts = 3	(IntOpt) Number of times to retry ebtables commands on failure.
ebtables_retry_interval = 1.0	(FloatOpt) Number of seconds to wait between ebtables retries.
firewall_driver = None	(StrOpt) Firewall driver (defaults to hypervisor specific iptables driver)
fixed_ip_disassociate_timeout = 600	(IntOpt) Seconds after which a deallocated IP is disassociated
flat_injected = False	(BoolOpt) Whether to attempt to inject network setup into guest
flat_interface = None	(StrOpt) FlatDhcp will bridge into this interface if set
flat_network_bridge = None	(StrOpt) Bridge for simple network instances
flat_network_dns = 8.8.4.4	(StrOpt) DNS server for simple network
floating_ip_dns_manager = nova.network.noop_dns_driver.NoopDNSDriver	(StrOpt) Full class name for the DNS Manager for floating IPs
force_dhcp_release = True	(BoolOpt) If True, send a dhcp release on instance termination
force_snat_range = []	(MultiStrOpt) Traffic to this range will always be snatted to the fallback ip, even if it would normally be bridged out of the node. Can be specified multiple times.
forward_bridge_interface = ['all']	(MultiStrOpt) An interface that bridges can forward to. If this is set to all then all traffic will be forwarded. Can be specified multiple times.
gateway = None	(StrOpt) Default IPv4 gateway
injected_network_template = $pybasedir/nova/virt/interfaces.template	(StrOpt) Template file for injected network
instance_dns_domain =	(StrOpt) Full class name for the DNS Zone for instance IPs
instance_dns_manager = nova.network.noop_dns_driver.NoopDNSDriver	(StrOpt) Full class name for the DNS Manager for instance IPs
iptables_bottom_regex =	(StrOpt) Regular expression to match iptables rule that should always be on the bottom.
iptables_drop_action = DROP	(StrOpt) The table that iptables to jump to when a packet is to be dropped.
iptables_top_regex =	(StrOpt) Regular expression to match iptables rule that should always be on the top.
l3_lib = nova.network.l3.LinuxNetL3	(StrOpt) Indicates underlying L3 management library
linuxnet_interface_driver = nova.network.linux_net.LinuxBridgeInterfaceDriver	(StrOpt) Driver used to create ethernet devices.
linuxnet_ovs_integration_bridge = br-int	(StrOpt) Name of Open vSwitch bridge used with linuxnet
multi_host = False	(BoolOpt) Default value for multi_host in networks. Also, if set, some rpc network calls will be sent directly to host.
network_allocate_retries = 0	(IntOpt) Number of times to retry network allocation on failures
network_api_class = nova.network.api.API	(StrOpt) The full class name of the network API class to use
network_device_mtu = None	(IntOpt) DEPRECATED: THIS VALUE SHOULD BE SET WHEN CREATING THE NETWORK. MTU setting for network interface.
network_driver = nova.network.linux_net	(StrOpt) Driver to use for network creation
network_manager = nova.network.manager.VlanManager	(StrOpt) Full class name for the Manager for network
network_size = 256	(IntOpt) Number of addresses in each private subnet
network_topic = network	(StrOpt) The topic network nodes listen on
networks_path = $state_path/networks	(StrOpt) Location to keep network config files
num_networks = 1	(IntOpt) Number of networks to support
ovs_vsctl_timeout = 120	(IntOpt) Amount of time, in seconds, that ovs_vsctl should wait for a response from the database. 0 is to wait forever.
public_interface = eth0	(StrOpt) Interface for public IP addresses
routing_source_ip = $my_ip	(StrOpt) Public IP of network host
security_group_api = nova	(StrOpt) The full class name of the security API class
send_arp_for_ha = False	(BoolOpt) Send gratuitous ARPs for HA setup
send_arp_for_ha_count = 3	(IntOpt) Send this many gratuitous ARPs for HA setup
share_dhcp_address = False	(BoolOpt) DEPRECATED: THIS VALUE SHOULD BE SET WHEN CREATING THE NETWORK. If True in multi_host mode, all compute hosts share the same dhcp address. The same IP address used for DHCP will be added on each nova-network node which is only visible to the vms on the same host.
teardown_unused_network_gateway = False	(BoolOpt) If True, unused gateway devices (VLAN and bridge) are deleted in VLAN network mode with multi hosted networks
update_dns_entries = False	(BoolOpt) If True, when a DNS entry must be updated, it sends a fanout cast to all network hosts to update their DNS entries in multi host mode
use_network_dns_servers = False	(BoolOpt) If set, uses the dns1 and dns2 from the network ref. as dns servers.
use_neutron_default_nets = False	(StrOpt) Control for checking for default networks
use_single_default_gateway = False	(BoolOpt) Use single default gateway. Only first nic of vm will get default gateway from dhcp server
vlan_interface = None	(StrOpt) VLANs will bridge into this interface if set
vlan_start = 100	(IntOpt) First VLAN for private networks
[vmware]
vlan_interface = vmnic0	(StrOpt) Physical ethernet adapter name for vlan networking