I have followed this link for creating a Docker instance in OpenStack. The instance is launched successfully and an IP 10.0.0.5 has been assigned to it. However, I cannot ping the docker instance from my host machine in spite of adding appropriate rules into the security group for allowing ping(ICMP).

Question: Why can't I ping any docker instance from host machine?

Note: I can successfully ping VM instances but cannot ping any docker instance.

Here is my local.conf file:

[[local|localrc]]

SERVICE_TOKEN=azertytoken
ADMIN_PASSWORD=nomoresecrete
MYSQL_PASSWORD=stackdb
RABBIT_PASSWORD=stackqueue
SERVICE_PASSWORD=$ADMIN_PASSWORD

LOGFILE=$DEST/logs/stack.sh.log

LOGDAYS=2

ENABLED_SERVICES=rabbit,mysql,key
ENABLED_SERVICES+=,n-api,n-crt,n-obj,n-cpu,n-cond,n-sch,n-novnc,n-xvnc,n-cauth
ENABLED_SERVICES+=,neutron,q-svc,q-agt,q-l3,q-meta,q-lbaas,q-fwaas,q-dhcp
ENABLED_SERVICES+=,cinder,c-api,c-vol,c-sch,c-bak
ENABLED_SERVICES+=,heat,h-api,h-api-cfn,h-api-cw,h-eng
ENABLED_SERVICES+=,horizon
ENABLED_SERVICE-=n-net

SWIFT_HASH=66a3d6b56c1f479c8b4e70ab5c2000f5
SWIFT_REPLICAS=1
SWIFT_DATA_DIR=$DEST/data

enable_service tempest

VIRT_DRIVER=novadocker.virt.docker.DockerDriver

##### Introduce glance to docker images
$GLANCE_API_CONF

[DEFAULT]
container_formats=ami,ari,aki,bare,ovf,ova,docker

##### Configure nova to use the nova-docker driver
$NOVA_CONF
[DEFAULT]
compute_driver=novadocker.virt.docker.DockerDriver

Please help me resolve the issue.