IPv6 in OpenStack CLI

Create router

openstack router create test-router1 --external-gateway public

Show available tenant IPv6 subnet

openstack subnet pool list --share | grep tenant-subnet-pool-v6

Create network

openstack network create test-network1

DUAL-STACK: Create IPv4 subnet (skip for IPv6 only)

openstack subnet create test-subnet1-ipv4 \
    --network test-network1 \
    --subnet-range 10.11.12.0/24

DUAL-STACK: Attach IPv4 subnet to router (skip for IPv6 only)

openstack router add subnet test-router1 test-subnet1-ipv4

Show available tenant IPv6 subnet

openstack subnet pool list --share | grep ":"

Create IPv6 subnet

openstack subnet create test-subnet1-ipv6 \
--network test-network1 \
--ip-version 6 \
--subnet-pool external-subnet-pool-v6 \
--prefix-length 64 \
--ipv6-ra-mode dhcpv6-stateless \
--ipv6-address-mode dhcpv6-stateless

Attach IPv6 subnet to router

openstack router add subnet test-router1 test-subnet1-ipv6

OPTINAL: allow access from outside

SECURITY_GROUP=test-secgroup
openstack security group create ${SECURITY_GROUP}

DUAL-STACK: allow access to Floating FIP from outside (skip for IPv6 only)

openstack security group rule create ${SECURITY_GROUP} --ethertype IPv4 --protocol icmp --ingress --remote-ip 0.0.0.0/0
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv4 --protocol icmp --egress --remote-ip 0.0.0.0/0
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv4 --protocol tcp --dst-port 22 --remote-ip 0.0.0.0/0
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv4 --protocol tcp --dst-port 80 --remote-ip 0.0.0.0/0

OPTIONAL: allow access to IPv6 from outside

openstack security group rule create ${SECURITY_GROUP} --ethertype IPv6 --protocol ipv6-icmp --ingress --remote-ip "::/0"
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv6 --protocol ipv6-icmp --egress --remote-ip "::/0"
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv6 --protocol tcp --dst-port 22 --remote-ip "::/0"
openstack security group rule create ${SECURITY_GROUP} --ethertype IPv6 --protocol tcp --dst-port 80 --remote-ip "::/0"

Crate test VM

SERVER_ID=test-vm1-test
openstack server create ${SERVER_ID} \
--flavor m1.small \
--image "Ubuntu 24.04" \
--network test-network1 \
--key-name test-key \
--security-group ${SECURITY_GROUP}

DUAL-STACK: Assign IPv4 floating IP to the VM (skip for IPv6 only)

FLOATING_IP=$(openstack floating ip create public -c floating_ip_address -f value)
openstack server add floating ip ${SERVER_ID} ${FLOATING_IP}

Show IP adresses

openstack server show ${SERVER_ID} -c addresses