1.2. Using IPv6 in Red Hat OpenStack Platform

Internal API

Yes

Yes

Storage

Yes

Yes

Storage Management

Yes

Yes

Project Networks

Yes

Yes

Yes

Project Network Endpoints

Yes

Yes

Yes

This refers to the IP address of the network hosting the project network tunnels, not the project networks themselves.

IPv6 for network endpoints supports only VXLAN and Geneve. Generic routing encapsulation (GRE) is not yet supported.

External - Public API (and Horizon)

Yes

Yes

External - Floating IPs

Yes

Yes

IPv6 uses Global Unicast Addresses (GUAs) instead of NAT and floating IP addresses. The Networking (neutron) service expects the IPv6 addressing between project networks to use GUAs, with no overlap in GUAs across the project networks, and therefore can be routed without NAT.

With dual stack (IPv4/v6), you can use floating IP addresses to only reach the IP addresses on IPv4 subnets.

Provider Networks

Yes

Yes

Yes

IPv6 support is dependent on the project operating system.

Provisioning (PXE/DHCP)

Yes

Interfaces on this network are IPv4 only.

IPMI or other BMC

Yes

RHOSP communicates with baseboard management controller (BMC) interfaces over the Provisioning network, which is IPv4.

If BMC interfaces support dual stack IPv4 or IPv6, tools that are not part of RHOSP can use IPv6 to communicate with the BMCs.

Overcloud Provisioning network

The Provisioning network used for ironic in the overcloud.

Overcloud Cleaning network

The isolated network used to clean a machine before it is ready for reuse.