addrconf_ifdown
static int addrconf_ifdown(struct net_device *dev, bool unregister);
addrconf_ifdown(dev, dev != net->loopback_dev);
addrconf_ifdown(dev, dev != net->loopback_dev);
addrconf_ifdown(dev, event != NETDEV_DOWN);
addrconf_ifdown(dev, false);
addrconf_ifdown(idev->dev, false);
addrconf_ifdown(dev, true);
addrconf_ifdown(init_net.loopback_dev, true);