kernel-pfroute: Activate TUN device before setting address

On FreeBSD, for some reason, we don't learn the interface is up
otherwise.  Even though ifconfig lists it as up at the same time.

src/libhydra/plugins/kernel_pfroute/kernel_pfroute_net.c

@@ -837,7 +837,7 @@ METHOD(kernel_net_t, add_ip, status_t,
 	{
 		prefix = vip->get_address(vip).len * 8;
 	}
-	if (!tun->set_address(tun, vip, prefix) || !tun->up(tun))
+	if (!tun->up(tun) || !tun->set_address(tun, vip, prefix))
 	{
 		tun->destroy(tun);
 		return FAILED;