[openstack-dev] [stable][neutron] minimal dnsmasq version

Kevin Benton blak111 at gmail.com
Thu Jan 8 04:25:38 UTC 2015


If the new requirement is expressed in the neutron packages for the distro,
wouldn't it be transparent to the operators?

On Wed, Jan 7, 2015 at 6:57 AM, Kyle Mestery <mestery at mestery.com> wrote:

> On Wed, Jan 7, 2015 at 8:21 AM, Ihar Hrachyshka <ihrachys at redhat.com>
> wrote:
>
>> Hi all,
>>
>> I've found out that dnsmasq < 2.67 does not work properly for IPv6
>> clients when it comes to MAC address matching (it fails to match, and so
>> clients get 'no addresses available' response). I've requested version bump
>> to 2.67 in: https://review.openstack.org/145482
>>
>> Good catch, thanks for finding this Ihar!
>
>
>> Now, since we've already released Juno with IPv6 DHCP stateful support,
>> and DHCP agent still has minimal version set to 2.63 there, we have a
>> dilemma on how to manage it from stable perspective.
>>
>> Obviously, we should communicate the revealed version dependency to
>> deployers via next release notes.
>>
>> Should we also backport the minimal version bump to Juno? This will
>> result in DHCP agent failing to start in case packagers don't bump dnsmasq
>> version with the next Juno release. If we don't bump the version, we may
>> leave deployers uninformed about the fact that their IPv6 stateful
>> instances won't get any IPv6 address assigned.
>>
>> An alternative is to add a special check just for Juno that would WARN
>> administrators instead of failing to start DHCP agent.
>>
>> Comments?
>>
>> Personally, I think the WARN may be the best route to go. Backporting a
> change which bumps the required dnsmasq version seems like it may be harder
> for operators to handle.
>
> Kyle
>
>
>> /Ihar
>>
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>
>
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-- 
Kevin Benton
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