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I suspect that's some Red Hat distro, and radvd lacks SELinux context
set to allow neutron l3 agent to spawn it.

On 18/12/14 15:50, Jerry Zhao wrote:
> It seems that radvd was not spawned successfully in l3-agent log:
> 
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: Stderr: '/usr/bin/neutron-rootwrap: Unauthorized
> command: ip netns exec qrouter-6066faaa-0e35-4e7b-8988-7337c493bad7
> radvd -C 
> /var/run/neutron/ra/6066faaa-0e35-4e7b-8988-7337c493bad7.radvd.conf
> -p 
> /var/run/neutron/external/pids/6066faaa-0e35-4e7b-8988-7337c493bad7.pid.radvd
>
> 
(no filter matched)\n'
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent Traceback (most recent call last): Dec 18
> 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 
> 2014-12-18 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/common/utils.py",
>
> 
line 341, in call
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent     return func(*args, **kwargs) Dec 18
> 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 
> 2014-12-18 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py",
>
> 
line 902, in process_router
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent self.root_helper) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/linux/ra.py",
>
> 
line 111, in enable_ipv6_ra
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent _spawn_radvd(router_id, radvd_conf,
> router_ns, root_helper) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/linux/ra.py",
>
> 
line 95, in _spawn_radvd
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent radvd.enable(callback, True) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/linux/external_process.py",
>
> 
line 77, in enable
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent ip_wrapper.netns.execute(cmd,
> addl_env=self.cmd_addl_env) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py",
>
> 
line 554, in execute
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent check_exit_code=check_exit_code,
> extra_ok_codes=extra_ok_codes) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent   File 
> "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py",
>
> 
line 82, in execute
> Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent     raise RuntimeError(m) Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent RuntimeError: Dec
> 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent Command: ['sudo',
> '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip',
> 'netns', 'exec', 'qrouter-6066faaa-0e35-4e7b-8988-7337c493bad7', 
> 'radvd', '-C', 
> '/var/run/neutron/ra/6066faaa-0e35-4e7b-8988-7337c493bad7.radvd.conf',
>
> 
'-p',
> '/var/run/neutron/external/pids/6066faaa-0e35-4e7b-8988-7337c493bad7.pid.radvd']
>
>  Dec 18 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3
> neutron-l3-agent: 2014-12-18 11:23:34.611 18015 TRACE
> neutron.agent.l3_agent Exit code: 99 Dec 18 11:23:34
> ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 2014-12-18
> 11:23:34.611 18015 TRACE neutron.agent.l3_agent Stdout: '' Dec 18
> 11:23:34 ci-overcloud-controller0-oxzkjphwfyw3 neutron-l3-agent: 
> 2014-12-18 11:23:34.611 18015 TRACE neutron.agent.l3_agent Stderr: 
> '/usr/bin/neutron-rootwrap: Unauthorized command: ip netns exec 
> qrouter-6066faaa-0e35-4e7b-8988-7337c493bad7 radvd -C 
> /var/run/neutron/ra/6066faaa-0e35-4e7b-8988-7337c493bad7.radvd.conf
> -p 
> /var/run/neutron/external/pids/6066faaa-0e35-4e7b-8988-7337c493bad7.pid.radvd
>
> 
(no filter matched)\n'
> 
> 
> On 12/18/2014 04:50 AM, Jerry Zhao wrote:
>> Hi I have configured a provider flat network with ipv6 subnet in
>> ra mode slaac and address mode slaac. However, when i launched a
>> ubuntu trusty VM, it couldn't get the ipv6 address but ipv4 only.
>> I am running the trunk code BTW. The command used are:
>> 
>> neutron net-create   --provider:network_type=flat 
>> --provider:physical_network=datacentre --router:external=true 
>> provider-net neutron subnet-create --ip-version=6 --name=ipv6 
>> --ipv6-address-mode=slaac --ipv6-ra-mode=slaac provider-net 
>> 2001:470:1f0e:cb4::0/64 --allocation-pool 
>> start=2001:470:1f0e:cb4::20,end=2001:470:1f0e:cb4::fffe
>> --gateway 2001:470:1f0e:cb4::3 neutron subnet-create
>> --ip-version=4 --name=ipv4 provider-net 162.3.122.0/24
>> --allocation-pool start=162.3.122.4,end=162.3.122.253 neutron
>> router-interface-add default-router ipv6 neutron
>> router-interface-add default-router ipv4
>> 
>> The vm is reachable when i configured the ipv6 address calculated
>> by neutron manually on the nic. How can i get the auto
>> configuration to work on the VM? Thanks!
> 
> 
> _______________________________________________ OpenStack-dev
> mailing list OpenStack-dev at lists.openstack.org 
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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