rumpuser_wg_ioctl
error = rumpuser_wg_ioctl(wg->wg_user, cmd, ifra, AF_INET);
error = rumpuser_wg_ioctl(wg->wg_user, cmd, ifra, AF_INET6);
int rumpuser_wg_ioctl(struct wg_user *, u_long, void *, int);