[Openstack-operators] Instance booted..networking not working

Anton Rodionov arodionov at mirantis.com
Thu Jan 17 23:48:10 UTC 2013

Hello Zach,

I'm not sure what is the problem yet.
Did you try following this
That might help.

On Fri, Jan 18, 2013 at 1:51 AM, Zach Easterbrook <fishlikehexagon at gmail.com
> wrote:

> I suppose this isn't strictly openstack but I'm unsure where else to ask..
> I am having issues with the networking after deploying to an openstack
> node. I'm trying to set up the VMs in "bridge" mode, so that the vm will be
> on the same network as the host machine. This is turning out to be far more
> difficult than we expected....
> Here you can find the output of ip addr, brctl show, and ip route.
> http://paste.debian.net/225809/
> As you can see, br100 is bridging eth0 and vnet0, which was added
> automatically at VM boot time. the VM is on When we attempt
> to ping it (from host or from any other machine on the subnet) it fails and
> says "host cannot be reached". The host can ping all other nodes in the
> cluster, but not the guest VM. The guest VM can't ping anything at all.
> iptables are off on the host and so is selinux. I can't seem to be able to
> get this networking pushed through.... Is there anyone who may know enough
> about KVM and networking to maybe help me get this set up?
> Pinging Guest from host:
> root at ITE1:~# ip route
> dev br100  proto kernel  scope link  src
> default via dev br100
> root at ITE1:~# ping
> PING ( 56(84) bytes of data.
> ^C
> --- ping statistics ---
> 3 packets transmitted, 0 received, 100% packet loss, time 2006ms
> Pinging gateway from host:
> root at ITE1:~# ping
> PING ( 56(84) bytes of data.
> 64 bytes from icmp_req=1 ttl=64 time=0.057 ms
> 64 bytes from icmp_req=2 ttl=64 time=0.034 ms
> 64 bytes from icmp_req=3 ttl=64 time=0.047 ms
> ^C
> --- ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 1998ms
> rtt min/avg/max/mdev = 0.034/0.046/0.057/0.009 ms
> If any more information is needed let me know. Thanks in advance for any
> help, it's very much appreciated.
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
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Best regards
Anton Rodionov
HelpDesk Engineer
Mirantis IT
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