#### NOTE
The `infiniband` device type is supported for both containers and VMs.
It supports hotplugging only for containers, not for VMs.
LXD supports two different kinds of network types for InfiniBand devices:
- `physical`: Passes a physical device from the host through to the instance.
The targeted device will vanish from the host and appear in the instance.
- `sriov`: Passes a virtual function of an SR-IOV-enabled physical network device into the instance.
#### NOTE
InfiniBand devices support SR-IOV, but in contrast to other SR-IOV-enabled devices, InfiniBand does not support dynamic device creation in SR-IOV mode.
Therefore, you must pre-configure the number of virtual functions by configuring the corresponding kernel module.
## Device options
`infiniband` devices have the following device options:
`hwaddr`
MAC address of the new interface
[](#device-infiniband-device-conf:hwaddr)
| **Key:** | `hwaddr` |
|---------------|-------------------|
| **Type:** | string |
| **Default:** | randomly assigned |
| **Required:** | no |
You can specify either the full 20-byte variant or the short 8-byte variant (which will modify only the last 8 bytes of the parent device).
`mtu`
MTU of the new interface
[](#device-infiniband-device-conf:mtu)
| **Key:** | `mtu` |
|---------------|------------|
| **Type:** | integer |
| **Default:** | parent MTU |
| **Required:** | no |
`name`
Name of the interface inside the instance
[](#device-infiniband-device-conf:name)
| **Key:** | `name` |
|---------------|-----------------|
| **Type:** | string |
| **Default:** | kernel assigned |
| **Required:** | no |
`nictype`
Device type
[](#device-infiniband-device-conf:nictype)
| **Key:** | `nictype` |
|---------------|-------------|
| **Type:** | string |
| **Required:** | yes |
Possible values are `physical` and `sriov`.
`parent`
The name of the host device or bridge
[](#device-infiniband-device-conf:parent)
| **Key:** | `parent` |
|---------------|------------|
| **Type:** | string |
| **Required:** | yes |
## Configuration examples
Add a `physical` `infiniband` device to an instance:
```none
lxc config device add infiniband nictype=physical parent=
```
Add an `sriov` `infiniband` device to an instance:
```none
lxc config device add infiniband nictype=sriov parent=
```
See [Configure devices](https://canonical.com/lxd/docs/default/howto/instances_configure/index.html.md#instances-configure-devices) for more information.