+netplan_yaml() {
+ # network configuration using ubuntu's netplan.io
+ local IFNAME="$1"
+ local METHOD="$2"
+ echo "Generating netplan configuration for $IFNAME ($METHOD)" >&2
+ echo "# generated by FAI"
+ echo "network:"
+ echo " version: 2"
+ echo " renderer: $RENDERER"
+ case "$RENDERER" in
+ networkd)
+ echo " ethernets:"
+ echo " $IFNAME:"
+ case "$METHOD" in
+ dhcp)
+ echo " dhcp4: true"
+ ;;
+ static)
+ echo " addresses: [$CIDR]"
+ echo " gateway4: $GATEWAYS_1"
+ echo " nameservers:"
+ echo " search: [$DOMAIN]"
+ echo " addresses: [${DNSSRVS// /, }]"
+ ;;
+ esac
+ esac
+}
+
+iface_stanza() {
+ # classic network configuration using /etc/network/interfaces
+ local IFNAME="$1"
+ local METHOD="$2"
+ echo "Generating interface configuration for $IFNAME ($METHOD)" >&2
+ echo "# generated by FAI"
+ echo "auto $IFNAME"
+ echo "iface $IFNAME inet $METHOD"
+ case "$METHOD" in
+ static)
+ echo " address $IPADDR"
+ echo " netmask $NETMASK"
+ echo " broadcast $BROADCAST"
+ echo " gateway $GATEWAYS"
+ ;;
+ esac
+}
+
+newnicnames() {
+
+ # determine predictable network names only for stretch and above
+
+ [ $do_init_tasks -eq 0 ] && return
+ [ -z "$NIC1" ] && return
+ ver=$($ROOTCMD dpkg-query --showformat='${Version}' --show udev)
+ if dpkg --compare-versions $ver lt 220-7; then
+ return
+ fi
+
+
+ fields="ID_NET_NAME_FROM_DATABASE ID_NET_NAME_ONBOARD ID_NET_NAME_SLOT ID_NET_NAME_PATH"
+ for field in $fields; do
+ name=$(udevadm info /sys/class/net/$NIC1 | sed -rn "s/^E: $field=(.+)/\1/p")
+ if [[ $name ]]; then
+ NIC1=$name
+ break
+ fi
+ done
+ if [[ ! $name ]]; then
+ echo "$0: error: could not find systemd predictable network name. Using $NIC1."
+ fi
+}
+
+if [ -z "$NIC1" ]; then
+ echo "WARNING: \$NIC1 is not defined. Cannot add ethernet to /etc/network/interfaces."
+fi
+CIDR=$(ip -o -f inet addr show $NIC1 | awk '{print $4}')
+newnicnames
+
+case "$FAI_ACTION" in
+ install|dirinstall)
+ ifclass DHCPC && METHOD=dhcp || METHOD=static
+ ifclass XORG && RENDERER=NetworkManager || RENDERER=networkd
+
+ if [ -d $target/etc/netplan ]; then
+ # Ubuntu >= 17.10 with netplan.io
+ if [ -n "$NIC1" ]; then
+ netplan_yaml $NIC1 $METHOD > $target/etc/netplan/01-${NIC1}.yaml
+ fi
+ elif [ -d $target/etc/network/interfaces.d ]; then
+ # ifupdown >= 0.7.41 (Debian >= 8, Ubuntu >= 14.04)
+
+ if ifclass VM; then
+ # note, this condition would apply to the elif below too,
+ # but I don't specify a static ip in fai, so not bothering
+ cat > $target/etc/network/interfaces <<-EOF
+# generated by FAI
+auto lo $NIC1
+iface lo inet loopback
+iface $NIC1 inet dhcp
+iface $NIC1 inet6 auto
+EOF
+
+ elif ifclass LINODE; then
+ # NIC1 is wrong, probably because the installer distro
+ # is stretch and the installed one is buster.
+ # todo: after upgrading installer to buster,
+ # try removing this condition
+ cat > $target/etc/network/interfaces <<EOF
+# generated by FAI
+auto lo $linode_if
+iface lo inet loopback
+iface $linode_if inet dhcp
+iface $linode_if inet6 auto