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Description of problem:

Cloud guest images need to have "NOZEROCONF=yes" in /etc/sysconfig/network so that it works well as an openstack guest. (At least when ovs-plugin is used with openstack Neutron/Quantum.)

Without it, it fails to access metadata via http://169.254.169.254

This is because:

- Metadata access is handled by the network node.
- Without "NOZEROCONF=yes", access to the subnet 169.254.0.0/16 is not routed to the network node because of the following routing table entiry. It comes from the APIPA specification.

$ route -n | grep 169.254
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 em1

The image you can find at https://rhn.redhat.com/rhn/software/channel/downloads/Download.do?cid=16952 lacks "NOZEROCONF=yes" as below.

$ virt-copy-out -a rhel-server-x86_64-kvm-6.4_20130130.0-4.qcow2 /etc/sysconfig/network /tmp/
$ cat /tmp/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=localhost.localdomain

Especially, the image above contains the cloud-init service and it uses the metadata at the startup time. So in the current image, cloud-int fails to work.

Verified:
  rhel-guest-image-6-6.5-20131101.2-1-sda.qcow2

-bash-4.1# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=localhost.localdomain
NOZEROCONF=yes
-bash-4.1#

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1735.html