---
name: "vustack"
section: "1"
platform: "linux"
package: "vuos-cmds"
version: "0.9.2-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/vustack"
---

# vustack(1)

set the default networking stack

## NAME

**vustack** – set the default networking stack

## SYNOPSIS

**vustack** \[*options* ...\] *stack* *command* \[*args*\]

## DESCRIPTION

**vunet** is the VUOS module for networking virtualization. Networking stacks can be loaded using [**vumount**(1)](/vumount/1.md) and are identified by a pathname: the mount point. **vustack** selects the stack to use among those available; *command* runs using the stack selected **vustack**.

## OPTIONS

- **-h**, **--help**

  Print a short help message and exit. If combined with **-v** print also the list of protocol family names.

- **-s**, **--supported**

  select the stack only for the protocol families supported by *stack*.

- **-f** *list*, **--family** *list*, **--families** *list*

  select the stack for the protocol families in *list*. *list* is a comma separated list of protocol names or numbers.

- **-v**, **--verbose**

  print the list of protocol families object of the stack selection.

## EXAMPLES

Load **vunet** and mount a stack:

-

  ```
  $ vu_insmod vunet
  $ vumount -t vunetvdestack vde:// /dev/net/vde
  ```

Run *ip link* using the stack mounted in /dev/net/vde:

-

  ```
  $ vustack /dev/net/vde ip link
  1: lo: *LOOPBACK* mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: vde0: *BROADCAST,MULTICAST* mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/ether 5a:1e:97:fa:ab:a3 brd ff:ff:ff:ff:ff:ff
  ```

Run *ip link set vde0 up* selecting /dev/net/vde only for the families supported by vunetvdestack:

-

  ```
  $ vustack -s -v /dev/net/vde ip link set vde0 up
  Using /dev/net/vde for the following address families:
      inet(2) inet6(10) netlink(16) packet(17)
  ```

mount a null stack and use it to disable netlink:

-

  ```
  $ vumount -t vunetnull vde:// /dev/net/null
  $ exec vustack -f netlink -v /dev/net/null bash
  Using /dev/net/null for the following address families:
      netlink(16)
  $ ip addr
  Cannot open netlink socket: Address family not supported by protocol
  ```

## SEE ALSO

[umvu(1)](/umvu/1.md), [vumount(1)](/vumount/1.md)

## AUTHOR

VirtualSquare. Project leader: Renzo Davoli