[Openstack] priv network issue - possibly dhcp related

Jagga Soorma jagga13 at gmail.com
Fri Apr 29 01:29:51 UTC 2016


I see the mac address of the instance asking for a dhcp address from the
compute node:

--
# tcpdump -n -i any | grep -i fa:16:3e:b2:0f
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144
bytes
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
01:23:34.588729 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
01:23:34.588738 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
01:23:34.588738 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
fa:16:3e:b2:0f:c0, length 300
01:23:48.018979 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
01:23:48.018989 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
01:23:48.018989 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
from fa:16:3e:b2:0f:c0, length 300
..snip..
--



On Thu, Apr 28, 2016 at 5:55 PM, Jagga Soorma <jagga13 at gmail.com> wrote:

> Hi Guys,
>
> I have a project with a priv network setup and any instance connected to
> it can't seem to get to its meta data service and no network gets setup on
> that instance.
>
> I created a new priv network in that project and was able to get
> communication on a new instance connected to that priv network with the
> same settings and using the same image and security group.
>
> Looks like there is something up with the network but I can't seem to find
> out what from the horizon ui.  They look and feel the same.  Any pointers
> on how I can further troubleshoot this problem?
>
> Thanks!
>
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