requirements of VIM-agnostic IPv6 functionality, including infrastructure layer and VNF
(VM) layer, and its gap analysis with OpenStack Neutron in Kilo Official Release.
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Use Case / Requirement |Supported in Kilo Neutron|Notes |
-+===========================================================+=========================+====================================================================+
-|All topologies work in a multi-tenant environment |Yes |The IPv6 design is following the Neutron tenant networks model; |
-| | |dnsmasq is being used inside DHCP network namespaces, while radvd |
-| | |is being used inside Neutron routers namespaces to provide full |
-| | |isolation between tenants. Tenant isolation can be based on VLANs, |
-| | |GRE, or VXLAN encapsulation. In case of overlays, the transport |
-| | |network (and VTEPs) must be IPv4 based as of today. |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|IPv6 VM to VM only |Yes |It is possible to assign IPv6-only addresses to VMs. Both switching |
-| | |(within VMs on the same tenant network) as well as east/west routing|
-| | |(between different networks of the same tenant) are supported. |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|IPv6 external L2 VLAN directly attached to a VM |Yes |IPv6 provider network model; RA messages from upstream (external) |
-| | |router are forwarded into the VMs |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|IPv6 subnet routed via L3 agent to an external IPv6 network| |Configuration is enhanced in Kilo to allow easier setup of the |
-| |1. Yes |upstream gateway, without the user forced to create an IPv6 subnet |
-|1. Both VLAN and overlay (e.g. GRE, VXLAN) subnet attached | |for the external network. |
-| to VMs; | | |
-|2. Must be able to support multiple L3 agents for a given |2. Yes | |
-| external network to support scaling (neutron scheduler | | |
-| to assign vRouters to the L3 agents) | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Ability for a NIC to support both IPv4 and IPv6 (dual | |Dual-stack is supported in Neutron with the addition of |
-|stack) address. | |``Multiple IPv6 Prefixes`` Blueprint |
-| | | |
-|1. VM with a single interface associated with a network, |1. Yes | |
-| which is then associated with two subnets. | | |
-|2. VM with two different interfaces associated with two |2. Yes | |
-| different networks and two different subnets. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Support IPv6 Address assignment modes. |1. Yes | |
-| | | |
-|1. SLAAC |2. Yes | |
-|2. DHCPv6 Stateless | | |
-|3. DHCPv6 Stateful |3. Yes | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Ability to create a port on an IPv6 DHCPv6 Stateful subnet |Yes | |
-|and assign a specific IPv6 address to the port and have it | | |
-|taken out of the DHCP address pool. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Ability to create a port with fixed_ip for a |**No** |The following patch disables this operation: |
-|SLAAC/DHCPv6-Stateless Subnet. | |https://review.openstack.org/#/c/129144/ |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Support for private IPv6 to external IPv6 floating IP; |**Rejected** |Blueprint proposed in upstream and got rejected. General expectation|
-|Ability to specify floating IPs via Neutron API (REST and | |is to avoid NAT with IPv6 by assigning GUA to tenant VMs. See |
-|CLI) as well as via Horizon, including combination of | |https://review.openstack.org/#/c/139731/ for discussion. |
-|IPv6/IPv4 and IPv4/IPv6 floating IPs if implemented. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Provide IPv6/IPv4 feature parity in support for |**To-Do** |The L3 configuration should be transparent for the SR-IOV |
-|pass-through capabilities (e.g., SR-IOV). | |implementation. SR-IOV networking support introduced in Juno based |
-| | |on the ``sriovnicswitch`` ML2 driver is expected to work with IPv4 |
-| | |and IPv6 enabled VMs. We need to verify if it works or not |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Additional IPv6 extensions, for example: IPSEC, IPv6 |**No** |It does not appear to be considered yet (lack of clear requirements)|
-|Anycast, Multicast | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|VM access to the meta-data server to obtain user data, SSH |**No** |This is currently not supported. Config-drive or dual-stack IPv4 / |
-|keys, etc. using cloud-init with IPv6 only interfaces. | |IPv6 can be used as a workaround (so that the IPv4 network is used |
-| | |to obtain connectivity with the metadata service) |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Full support for IPv6 matching (i.e., IPv6, ICMPv6, TCP, |Yes | |
-|UDP) in security groups. Ability to control and manage all | | |
-|IPv6 security group capabilities via Neutron/Nova API (REST| | |
-|and CLI) as well as via Horizon. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|During network/subnet/router create, there should be an |Yes |Two new Subnet attributes were introduced to control IPv6 address |
-|option to allow user to specify the type of address | |assignment options: |
-|management they would like. This includes all options | | |
-|including those low priority if implemented (e.g., toggle | |* ``ipv6-ra-mode``: to determine who sends Router Advertisements; |
-|on/off router and address prefix advertisements); It must | | |
-|be supported via Neutron API (REST and CLI) as well as via | |* ``ipv6-address-mode``: to determine how VM obtains IPv6 address, |
-|Horizon | | default gateway, and/or optional information. |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Security groups anti-spoofing: Prevent VM from using a |Yes | |
-|source IPv6/MAC address which is not assigned to the VM | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Protect tenant and provider network from rough RAs |Yes |When using a tenant network, Neutron is going to automatically |
-| | |handle the filter rules to allow connectivity of RAs to the VMs only|
-| | |from the Neutron router port; with provider networks, users are |
-| | |required to specify the LLA of the upstream router during the subnet|
-| | |creation, or otherwise manually edit the security-groups rules to |
-| | |allow incoming traffic from this specific address. |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Support the ability to assign multiple IPv6 addresses to |Yes | |
-|an interface; both for Neutron router interfaces and VM | | |
-|interfaces. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Ability for a VM to support a mix of multiple IPv4 and IPv6|Yes | |
-|networks, including multiples of the same type. | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Support for IPv6 Prefix Delegation. |**Roadmap** |Some partial support is available in Liberty release |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|Distributed Virtual Routing (DVR) support for IPv6 |**No** |Blueprint proposed upstream, pending discussion. |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|IPv6 First-Hop Security, IPv6 ND spoofing. |**Roadmap** |Supported in Liberty release |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
-|IPv6 support in Neutron Layer3 High Availability |Yes | |
-|(keepalived+VRRP). | | |
-+-----------------------------------------------------------+-------------------------+--------------------------------------------------------------------+
++-------------------------------------+------------+-----------------------------------------------+
+|Use Case / Requirement |Supported in|Notes |
+| |Kilo Neutron| |
+|=====================================+============+===============================================+
+|All topologies work in a multi-tenant|Yes |The IPv6 design is following the Neutron tenant|
+|environment | |networks model; dnsmasq is being used inside |
+| | |DHCP network namespaces, while radvd is being |
+| | |used inside Neutron routers namespaces to |
+| | |provide full isolation between tenants. Tenant |
+| | |isolation can be based on VLANs, GRE, or VXLAN |
+| | |encapsulation. In case of overlays, the |
+| | |transport network (and VTEPs) must be IPv4 |
+| | |based as of today. |
++-------------------------------------+------------+-----------------------------------------------+
+|IPv6 VM to VM only |Yes |It is possible to assign IPv6-only addresses to|
+| | |VMs. Both switching (within VMs on the same |
+| | |tenant network) as well as east/west routing |
+| | |(between different networks of the same tenant)|
+| | |are supported. |
++-------------------------------------+------------+-----------------------------------------------+
+|IPv6 external L2 VLAN directly |Yes |IPv6 provider network model; RA messages from |
+|attached to a VM | |upstream (external) router are forwarded into |
+| | |the VMs |
++-------------------------------------+------------+-----------------------------------------------+
+|IPv6 subnet routed via L3 agent to an| |Configuration is enhanced in Kilo to allow |
+|external IPv6 network | |easier setup of the upstream gateway, without |
+| |1. Yes |the user forced to create an IPv6 subnet for |
+|1. Both VLAN and overlay (e.g. GRE, | |the external network. |
+| VXLAN) subnet attached to VMs; | | |
+|2. Must be able to support multiple |2. Yes | |
+| L3 agents for a given external | | |
+| network to support scaling | | |
+| (neutron scheduler to assign | | |
+| vRouters to the L3 agents) | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Ability for a NIC to support both | |Dual-stack is supported in Neutron with the |
+|IPv4 and IPv6 (dual stack) address. | |addition of ``Multiple IPv6 Prefixes`` |
+| | |Blueprint |
+|1. VM with a single interface |1. Yes | |
+| associated with a network, which | | |
+| is then associated with two | | |
+| subnets | | |
+|2. VM with two different interfaces |2. Yes | |
+| associated with two different | | |
+| networks and two different subnets| | |
++-------------------------------------+------------+-----------------------------------------------+
+|Support IPv6 Address assignment modes|1. Yes | |
+| | | |
+|1. SLAAC |2. Yes | |
+|2. DHCPv6 Stateless | | |
+|3. DHCPv6 Stateful |3. Yes | |
++-------------------------------------+------------+-----------------------------------------------+
+|Ability to create a port on an IPv6 |Yes | |
+|DHCPv6 Stateful subnet and assign a | | |
+|specific IPv6 address to the port and| | |
+|have it taken out of the DHCP address| | |
+|pool. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Ability to create a port with |**No** |The following patch disables this operation: |
+|fixed_ip for a SLAAC/DHCPv6-Stateless| |https://review.openstack.org/#/c/129144/ |
+|Subnet. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Support for private IPv6 to external |**Rejected**|Blueprint proposed in upstream and got |
+|IPv6 floating IP; Ability to specify | |rejected. General expectation is to avoid NAT |
+|floating IPs via Neutron API (REST | |with IPv6 by assigning GUA to tenant VMs. See |
+|and CLI) as well as via Horizon, | |https://review.openstack.org/#/c/139731/ |
+|including combination of IPv6/IPv4 | |for discussion. |
+|and IPv4/IPv6 floating IPs if | | |
+|implemented. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Provide IPv6/IPv4 feature parity in |**To-Do** |The L3 configuration should be transparent for |
+|support for pass-through capabilities| |the SR-IOV implementation. SR-IOV networking |
+|(e.g., SR-IOV). | |support introduced in Juno based on the |
+| | |``sriovnicswitch`` ML2 driver is expected to |
+| | |work with IPv4 and IPv6 enabled VMs. We need to|
+| | |verify if it works or not |
++-------------------------------------+------------+-----------------------------------------------+
+|Additional IPv6 extensions, for |**No** |It does not appear to be considered yet (lack |
+|example: IPSEC, IPv6 Anycast, | |of clear requirements) |
+|Multicast | | |
++-------------------------------------+------------+-----------------------------------------------+
+|VM access to the meta-data server to |**No** |This is currently not supported. Config-drive |
+|obtain user data, SSH keys, etc. | |or dual-stack IPv4 / IPv6 can be used as a |
+|using cloud-init with IPv6 only | |workaround (so that the IPv4 network is used to|
+|interfaces. | |obtain connectivity with the metadata service) |
++-------------------------------------+------------+-----------------------------------------------+
+|Full support for IPv6 matching (i.e.,|Yes | |
+|IPv6, ICMPv6, TCP, UDP) in security | | |
+|groups. Ability to control and manage| | |
+|all IPv6 security group capabilities | | |
+|via Neutron/Nova API (REST and CLI) | | |
+|as well as via Horizon. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|During network/subnet/router create, |Yes |Two new Subnet attributes were introduced to |
+|there should be an option to allow | |control IPv6 address assignment options: |
+|user to specify the type of address | | |
+|management they would like. This | | |
+|includes all options including those | |* ``ipv6-ra-mode``: to determine who sends |
+|low priority if implemented (e.g., | | Router Advertisements; |
+|toggle on/off router and address | | |
+|prefix advertisements); It must be | |* ``ipv6-address-mode``: to determine how VM |
+|supported via Neutron API (REST and | | obtains IPv6 address, default gateway, and/or|
+|CLI) as well as via Horizon | | optional information. |
++-------------------------------------+------------+-----------------------------------------------+
+|Security groups anti-spoofing: |Yes | |
+|Prevent VM from using a source | | |
+|IPv6/MAC address which is not | | |
+|assigned to the VM | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Protect tenant and provider network |Yes |When using a tenant network, Neutron is going |
+|from rough RAs | |to automatically handle the filter rules to |
+| | |allow connectivity of RAs to the VMs only from |
+| | |the Neutron router port; with provider |
+| | |networks, users are required to specify the LLA|
+| | |of the upstream router during the subnet |
+| | |creation, or otherwise manually edit the |
+| | |security-groups rules to allow incoming traffic|
+| | |from this specific address. |
++-------------------------------------+------------+-----------------------------------------------+
+|Support the ability to assign |Yes | |
+|multiple IPv6 addresses to an | | |
+|interface; both for Neutron router | | |
+|interfaces and VM interfaces. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|Ability for a VM to support a mix of |Yes | |
+|multiple IPv4 and IPv6 networks, | | |
+|including multiples of the same type.| | |
++-------------------------------------+------------+-----------------------------------------------+
+|Support for IPv6 Prefix Delegation. |**Roadmap** |Some partial support is available in Liberty |
+| | |release |
++-------------------------------------+------------+-----------------------------------------------+
+|Distributed Virtual Routing (DVR) |**No** |Blueprint proposed upstream, pending discussion|
+|support for IPv6 | | |
++-------------------------------------+------------+-----------------------------------------------+
+|IPv6 First-Hop Security, IPv6 ND |**Roadmap** |Supported in Liberty release |
+|spoofing. | | |
++-------------------------------------+------------+-----------------------------------------------+
+|IPv6 support in Neutron Layer3 High |Yes | |
+|Availability (keepalived+VRRP). | | |
++-------------------------------------+------------+-----------------------------------------------+
Code Review / ipv6.git / commitdiff