VUSTACK(1)

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) 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), vumount(1)

AUTHOR
VirtualSquare. Project leader: Renzo Davoli