Function setInterfaceUp

tailnet/test/integration/network.go:744–751

setInterfaceUp brings the given interface up.

(netNS *os.File, ifaceName string)

// setInterfaceUp brings the given interface up.
func setInterfaceUp(netNS *os.File, ifaceName string) error {
	_, err := commandInNetNS(netNS, "ip", []string{"link", "set", ifaceName, "up"}).Output()
	if err != nil {
		return xerrors.Errorf("bring up interface %q in netns: %w", ifaceName, wrapExitErr(err))
	}

	return nil
}

// addRouteInNetNS adds a route to the given network namespace.
func addRouteInNetNS(netNS *os.File, route []string) error {