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Hi Terry,

I upgrade to version 2013.1.4 on all 3 hosts 
(controller/network/compute). Unfortunately that doesn't solve the DNS 
issue for instances.

In the dhcp-agent.log, there is a message of:

WARNING [quantum.agent.linux.dhcp] FAILED VERSION REQUIREMENT FOR 
DNSMASQ. DHCP AGENT MAY NOT RUN CORRECTLY! Please ensure that its 
version is 2.59 or above!

Not sure if it's critical or not ...

Thanks,
Xin

On 11/14/2013 12:36 PM, Terry Wilson wrote:
>> Hello,
>>
>> I have a multi-host grizzly RHEL6 install, using OVS. From the instance,
>> I can ping external ips, but DNS resolv doesn't work, it only works for
>> other instances on the VM network.
>> If I do subnet-update to add public DNS server ips to the vm network,
>> DNS resolv works for external hosts, but stops working for other
>> instances on the same VM network.
>> Do I miss some configuration here?
>>
>> Thanks,
>> Xin
> Which version of quantum are you using? In version 2013.1.4, a bug was fixed for adding a default route in the namespace in which the dnsmasq agent runs so that external DNS requests could be handled. See: https://bugs.launchpad.net/neutron/+bug/1181378 for more details.
>
> Terry