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Hello Stackers !

i am finding a weird error in my l3_agent.log file:

================================

Stderr: ''
2012-11-05 10:22:59    ERROR [quantum.agent.l3_agent] Error running 
l3_nat daemon_loop
Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", 
line 170, in daemon_loop
     self.do_single_loop()
   File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", 
line 227, in do_single_loop
     self.process_router(ri)
   File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", 
line 300, in process_router
     self.external_gateway_added(ri, ex_gw_port, internal_cidrs)
   File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", 
line 398, in external_gateway_added
     ri.iptables_manager.apply()
   File 
"/usr/lib/python2.7/dist-packages/quantum/agent/linux/iptables_manager.py", 
line 282, in apply
     root_helper=self.root_helper))
   File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/utils.py", 
line 55, in execute
     raise RuntimeError(m)
RuntimeError:
Command: ['sudo', '/usr/bin/quantum-rootwrap', 
'/etc/quantum/rootwrap.conf', '/sbin/iptables-save', '-t', 'filter']
Exit code: 99
Stdout: 'Unauthorized command: /sbin/iptables-save -t filter\n'
Stderr: ''

==================================

I can't seem to find any documentation about this problem.

Can anyone please shed some light on this ?

Best regards,
Bilel