Description of configuration options for network

Configuration option=Default value	Description
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=120	(IntOpt) Lifetime of a DHCP lease in seconds
dhcpbridge=$bindir/nova-dhcpbridge	(StrOpt) location of nova-dhcpbridge
dhcpbridge_flagfile=['/etc/nova/nova-dhcpbridge.conf']	(MultiStrOpt) location of flagfiles for dhcpbridge
dns_server=[]	(MultiStrOpt) if set, uses specific dns server for dnsmasq. Canbe specified multiple times.
dns_update_periodic_interval=-1	(IntOpt) Number of seconds to wait between runs of updates to DNS entries.
dnsmasq_config_file=	(StrOpt) Override the default dnsmasq settings with this file
firewall_driver=None	(StrOpt) Firewall driver (defaults to hypervisor specific iptables driver)
fixed_ip_disassociate_timeout=600	(IntOpt) Seconds after which a deallocated ip is disassociated
flat_injected=False	(BoolOpt) Whether to attempt to inject network setup into guest
flat_interface=None	(StrOpt) FlatDhcp will bridge into this interface if set
flat_network_bridge=None	(StrOpt) Bridge for simple network instances
flat_network_dns=8.8.4.4	(StrOpt) Dns for simple network
floating_ip_dns_manager=nova.network.noop_dns_driver.NoopDNSDriver	(StrOpt) full class name for the DNS Manager for floating IPs
force_dhcp_release=True	(BoolOpt) If True, send a dhcp release on instance termination
force_snat_range=[]	(MultiStrOpt) Traffic to this range will always be snatted to the fallback ip, even if it would normally be bridged out of the node. Can be specified multiple times.
forward_bridge_interface=['all']	(MultiStrOpt) An interface that bridges can forward to. If this is set to all then all traffic will be forwarded. Can be specified multiple times.
gateway=None	(StrOpt) Default IPv4 gateway
injected_network_template=$pybasedir/nova/virt/interfaces.template	(StrOpt) Template file for injected network
injected_network_template=$pybasedir/nova/virt/baremetal/interfaces.template	(StrOpt) Template file for injected network
injected_network_template=$pybasedir/nova/virt/interfaces.template	(StrOpt) Template file for injected network
injected_network_template=$pybasedir/nova/virt/baremetal/interfaces.template	(StrOpt) Template file for injected network
instance_dns_domain=	(StrOpt) full class name for the DNS Zone for instance IPs
instance_dns_manager=nova.network.noop_dns_driver.NoopDNSDriver	(StrOpt) full class name for the DNS Manager for instance IPs
iptables_bottom_regex=	(StrOpt) Regular expression to match iptables rule that shouldalways be on the bottom.
iptables_drop_action=DROP	(StrOpt) The table that iptables to jump to when a packet is to be dropped.
iptables_top_regex=	(StrOpt) Regular expression to match iptables rule that shouldalways be on the top.
l3_lib=nova.network.l3.LinuxNetL3	(StrOpt) Indicates underlying L3 management library
linuxnet_interface_driver=nova.network.linux_net.LinuxBridgeInterfaceDriver	(StrOpt) Driver used to create ethernet devices.
linuxnet_ovs_integration_bridge=br-int	(StrOpt) Name of Open vSwitch bridge used with linuxnet
multi_host=False	(BoolOpt) Default value for multi_host in networks. Also, if set, some rpc network calls will be sent directly to host.
network_allocate_retries=0	(IntOpt) Number of times to retry network allocation on failures
network_api_class=nova.network.api.API	(StrOpt) The full class name of the network API class to use
network_device_mtu=None	(StrOpt) MTU setting for vlan
network_driver=nova.network.linux_net	(StrOpt) Driver to use for network creation
network_manager=nova.network.manager.VlanManager	(StrOpt) full class name for the Manager for network
network_size=256	(IntOpt) Number of addresses in each private subnet
network_topic=network	(StrOpt) the topic network nodes listen on
networks_path=$state_path/networks	(StrOpt) Location to keep network config files
num_networks=1	(IntOpt) Number of networks to support
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) 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_interface=vmnic0	(StrOpt) Physical ethernet adapter name for vlan networking
vlan_start=100	(IntOpt) First VLAN for private networks