--- udev-gentoo-scripts-33/init.d/udev
+++ udev-gentoo-scripts-33.alpine/init.d/udev
@@ -11,6 +11,7 @@
 
 depend() {
 	need sysfs dev-mount
+	use modloop
 	before checkfs fsck
 	keyword -lxc -systemd-nspawn -vserver
 }