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