diff --git a/neutron/agent/l3/agent.py b/neutron/agent/l3/agent.py
index b7c45e141a0..4533d910ad1 100644
--- a/neutron/agent/l3/agent.py
+++ b/neutron/agent/l3/agent.py
@@ -798,7 +798,8 @@ class L3NATAgentWithStateReport(L3NATAgent):
                 'gateway_external_network_id':
                 self.conf.gateway_external_network_id,
                 'interface_driver': self.conf.interface_driver,
-                'log_agent_heartbeats': self.conf.AGENT.log_agent_heartbeats},
+                'log_agent_heartbeats': self.conf.AGENT.log_agent_heartbeats,
+                'extensions': self.l3_ext_manager.names()},
             'start_flag': True,
             'agent_type': lib_const.AGENT_TYPE_L3}
         report_interval = self.conf.AGENT.report_interval