openstack team mailing list archive

[Nathanael Burton <nathanael.i.burton@xxxxxxxxx>]

On Wed, Mar 20, 2013 at 3:51 PM, Lorin Hochstein
<lorin@xxxxxxxxxxxxxxxxxx>wrote:

> I'm doing a Folsom deployment with FlatDHCP (not multihost).
>
> When I try to boot a quantal image, the instance doesn't pick up the DHCP
> lease. I've confirmed that dnsmasq is sending out the DHCPOFFER, and I can
> see by tcpdump on the compute host that the DHCP packets are making it to
> the vnet0 interface.
>
>
> Note that I tried adding this iptables rule as mentioned here <
> https://github.com/mseknibilel/OpenStack-Folsom-Install-guide/issues/14>,
> but that didn't resolve it.
>
>     iptables -D POSTROUTING -t mangle -p udp --dport 68 -j CHECKSUM
> --checksum-fill
>
>
>
> However, the problem goes away if I change this setting on the compute
> hosts in /etc/nova/nova.conf
>
>     libvirt_use_virtio_for_bridges=true
>
> to:
>
>    libvirt_use_virtio_for_bridges=false
>
>
> Anybody know what would cause this?
>
>
> I'm on Ubuntu 12.04 with the cloud-archive packages, with KVM as the
> hypervisor
>
> Lorin
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com
>
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>
You didn't restart nova-network without killing and restarting dnsmasq, did
you?

Nate