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Hi Ahmed,

Unfortunately there are many possible reasons - and different ones
depending on your setup.

I will guess, though, that you're using a default OVS setup, without DVR.
In that case DHCP should be provided by Dnsmasq running on your network
node, and I would start by checking for that process and looking at its
logs (which could be in /var/log/syslog, /var/log/messages, journalctl,
...) to see if there is any sign of DHCP requests being received, and then
whether Dnsmasq sends any DHCP responses.

Regards,
     Neil


On Sat, Jun 18, 2016 at 1:34 PM Ahmed Medhat <a.medhat.h at gmail.com> wrote:

> Hi All,
>
> I have installed kilo devstack and have a problem with dhcp, it is not
> assigning IPs to the VMs.
> What are the reasons for that ?
>
> Best regards,
> Ahmed
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