Comment 2 for bug 1569325

Reproduced on 10.0 #221, while Fuel shows no errors on UI:
Verification succeeded. Your network is configured correctly.

We can see the following in /var/log/dhcp_checker.log on bootstrap node:
2016-05-27 12:05:06 WARNING (api) Spawning listener for enp0s6 failed.
2016-05-27 12:05:06 WARNING (api) Spawning listener for enp0s7 failed.
2016-05-27 12:05:06 WARNING (api) Spawning listener for enp0s5 failed.

Version info:
cat /etc/fuel_build_id:
 221
cat /etc/fuel_build_number:
 221
cat /etc/fuel_release:
 10.0
cat /etc/fuel_openstack_version:
 newton-10.0
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':
 fuel-release-10.0.0-1.mos6347.noarch
 network-checker-10.0.0-1.mos73.x86_64
 fuel-utils-10.0.0-1.mos8411.noarch
 python-packetary-10.0.0-1.mos137.noarch
 fuel-agent-10.0.0-1.mos283.noarch
 fuel-ostf-10.0.0-1.mos939.noarch
 fuel-plugin-kubernetes-1.0-1.0.0-1.noarch
 fuel-mirror-10.0.0-1.mos137.noarch
 fuel-bootstrap-cli-10.0.0-1.mos283.noarch
 fuel-nailgun-10.0.0-1.mos8731.noarch
 fuel-migrate-10.0.0-1.mos8411.noarch
 fuel-setup-10.0.0-1.mos6347.noarch
 rubygem-astute-10.0.0-1.mos746.noarch
 fuel-misc-10.0.0-1.mos8411.noarch
 python-fuelclient-10.0.0-1.mos318.noarch
 fuel-10.0.0-1.mos6347.noarch
 fuel-openstack-metadata-10.0.0-1.mos8731.noarch
 fuel-notify-10.0.0-1.mos8411.noarch
 nailgun-mcagents-10.0.0-1.mos746.noarch
 fuel-library10.0-10.0.0-1.mos8411.noarch
 fuelmenu-10.0.0-1.mos274.noarch
 fuel-ui-10.0.0-1.mos2704.noarch
 shotgun-10.0.0-1.mos89.noarch