Comment 3 for bug 1373423

$ neutron ext-list
+-----------------------+-----------------------------------------------+
| alias | name |
+-----------------------+-----------------------------------------------+
| security-group | security-group |
| l3_agent_scheduler | L3 Agent Scheduler |
| ext-gw-mode | Neutron L3 Configurable external gateway mode |
| binding | Port Binding |
| provider | Provider Network |
| agent | agent |
| quotas | Quota management support |
| dhcp_agent_scheduler | DHCP Agent Scheduler |
| l3-ha | HA Router extension |
| multi-provider | Multi Provider Network |
| external-net | Neutron external network |
| router | Neutron L3 Router |
| allowed-address-pairs | Allowed Address Pairs |
| extraroute | Neutron Extra Route |
| extra_dhcp_opt | Neutron Extra DHCP opts |
| dvr | Distributed Virtual Router |
+-----------------------+-----------------------------------------------+

these are enabled by devstack by default