Comment 6 for bug 1821912

http://logs.openstack.org/04/637304/7/check/neutron-tempest-plugin-scenario-linuxbridge/e562437/testr_results.html.gz
http://logs.openstack.org/57/651357/1/check/neutron-tempest-dvr-ha-multinode-full/3a0f4ee/testr_results.html.gz

Both have metadata request related failed log:
(1)Lease of 10.10.210.139 obtained, lease time 86400
cirros-ds 'net' up at 14.64
checking http://169.254.169.254/2009-04-04/instance-id
failed 1/20: up 15.12. request failed
.....
failed 20/20: up 97.28. request failed
failed to read iid from metadata. tried 20

This may because router is not UP. (bug/1813787)

(2) Lease of 10.1.0.8 obtained, lease time 86400
route: SIOCADDRT: File exists
WARN: failed: route add -net "0.0.0.0/0" gw "10.1.0.1"
checking http://169.254.169.254/2009-04-04/instance-id
successful after 1/20 tries: up 49.77. iid=i-00000004
failed to get http://169.254.169.254/2009-04-04/meta-data/public-keys
warning: no ec2 metadata for public-keys