(network-sriov)= # SR-IOV network {abbr}`SR-IOV (Single root I/O virtualization)` is a hardware standard that allows a single network card port to appear as several virtual network interfaces in a virtualized environment. The `sriov` network type allows to specify presets to use when connecting instances to a parent interface. In this case, the instance NICs can simply set the `network` option to the network they connect to without knowing any of the underlying configuration details. (network-sriov-options)= ## Configuration options The following configuration key namespaces are currently supported for the `sriov` network type: - `maas` (MAAS network identification) - `user` (free-form key/value for user metadata) ```{note} {{note_ip_addresses_CIDR}} ``` The following configuration options are available for the `sriov` network type: Key | Type | Condition | Default | Description :-- | :-- | :-- | :-- | :-- mtu | integer | - | - | The MTU of the new interface parent | string | - | - | Parent interface to create `sriov` NICs on vlan | integer | - | - | The VLAN ID to attach to maas.subnet.ipv4 | string | ipv4 address | - | MAAS IPv4 subnet to register instances in (when using `network` property on NIC) maas.subnet.ipv6 | string | ipv6 address | - | MAAS IPv6 subnet to register instances in (when using `network` property on NIC) user.* | string | - | - | User-provided free-form key/value pairs