Use a private network so we can start daemons in the container

README

@@ -28,6 +28,6 @@ cleanup.sh
 
 
 SHORT VERSION:
-  sudo apt-get install squashfs-tools xorriso syslinux
+  sudo apt-get install squashfs-tools xorriso syslinux systemd-container
   time sudo sh -c "env BUILD_CONFIG=12.10 ./full-rebuild.sh"
   time sudo sh -c "env BUILD_CONFIG=13.04 ./full-rebuild.sh"

enter.sh

@@ -16,6 +16,22 @@ fi
 UNIT=nilmbuntu-run-$VERSION
 MACH=nilmbuntu-$VERSION
 
+setup_networking() {
+    # We use a virtual ethernet adapter -- this requires that
+    # systemd-networkd is installed and running on the host.
+    if ! systemctl is-active systemd-networkd ; then
+        echo "Starting systemd-networkd"
+        systemctl start systemd-networkd
+    fi
+
+    # However, the current systemd-networkd from Debian is broken and
+    # won't enable masquerading -- so do it manually
+    IFACE=$(ip -4 route list default | awk '{print $5}')
+    echo 1 > /proc/sys/net/ipv4/ip_forward
+    iptables -t nat -D POSTROUTING -o $IFACE -j MASQUERADE >/dev/null || true
+    iptables -t nat -A POSTROUTING -o $IFACE -j MASQUERADE
+}
+
 kill_container() {
     # Kill any running container
     if systemctl --quiet is-active $UNIT ; then
@@ -41,13 +57,13 @@ kill_container() {
 }
 
 start_container() {
-    # Start the container
     kill_container
     echo "Starting container..."
     systemd-run --unit=$UNIT systemd-nspawn \
                 --quiet \
                 --keep-unit \
                 --boot \
+                --network-veth \
                 --directory $(realpath $FS) \
                 --machine $MACH
     echo "Waiting..."
@@ -87,6 +103,7 @@ start_container
 
 run "resolvconf --disable-updates"
 run "echo 'nameserver 8.8.8.8' > /run/resolvconf/resolv.conf"
+run "hostnamectl --transient set-hostname nilmbuntu"
 
 #run "dbus-uuidgen > /var/lib/dbus/machine-id"
 #run "dpkg-divert --local --rename --add /sbin/initctl"
@@ -103,10 +120,11 @@ fi
 
 echo "Cleaning up..."
 
-# Manually clean up some unnecessary things that show up after booting
-# an image and installing packages.  This doesn't get everything, but
-# what's left should be fine.
+# Manually clean up some things that show up after booting an image
+# and installing packages.  This doesn't get everything, but what's
+# left should be fine.
 run "apt-get clean"
+run "> /etc/machine-id"
 run "rm -f /core /boot/grub/grubenv"
 run "rm -f /var/lib/systemd/random-seed"
 run "rm -f /var/lib/ubuntu-drivers-common/last_gfx_boot"