--- /dev/null
+# This file describes the network interfaces available on your system
+# and how to activate them. For more information, see interfaces(5).
+
+source /etc/network/interfaces.d/*
+
+# The loopback network interface
+auto lo
+iface lo inet loopback
 
 MIN_MODULES="all ${system_class_name} ${system_name}"
 
 # For upgrading only very selectively prepare /etc/ files.
-PATH_REL_APT_CONF=apt/apt.conf
+PATH_REL_APT_CONF=apt/apt.conf.d
 PATH_REL_SOURCES_LIST=apt/sources.list
 cp ${PATH_MANY}/${PATH_REL_ETC}/all/${PATH_REL_APT_CONF}/* /${PATH_REL_ETC}/${PATH_REL_APT_CONF}/
 apt update
 apt -y -o Dpkg::Options::='--force-confnew' upgrade
 apt -y -o Dpkg::Options::='--force-confnew' full-upgrade
-cp ../${PATH_REL_ETC}/all/${PATH_REL_SOURCES_LIST}/* /${PATH_REL_ETC}/
+cp ../${PATH_REL_ETC}/all/${PATH_REL_SOURCES_LIST} /${PATH_REL_ETC}/
 apt clean
 apt update
 apt -y -o Dpkg::Options::='--force-confnew' upgrade