Containers: setup network addresses

Use systemd-networkd and config files

lxc_net/container.py

@@ -150,12 +150,32 @@ class Container(util.LibvirtObject):
             for net in self.networks
         ]
 
+    def _create_network_files(self):
+        """ Creates systemd-networkd .network files to set IP addresses """
+        if not self.overlay_root:
+            raise Exception("No root directory specified yet")
+        net_config_templ = JinjaTemplate("nic.network")
+        net_conf_dir = self.overlay_root.mount_point / "etc/systemd/network/"
+        for net in self.networks:
+            net_config = net_config_templ.inst(
+                mac=util.MACAddress(net.id, self.id),
+                ipv4=util.Addrv4(net.id, self.id),
+                ipv6=util.Addrv6(net.id, self.id),
+            )
+            net_config_path = net_conf_dir / "11-{link:02d}-{name}.network".format(
+                link=net.id, name=net.name
+            )
+            with open(net_config_path, "w") as handle:
+                handle.write(net_config)
+
     def create(self):
         if self.lxc_container:
             raise self.AlreadyExists()
 
         self.overlay_root = OverlayDirectory(settings.BASE_SYSTEM_ROOT, name=self.name)
 
+        self._create_network_files()
+
         xml = JinjaTemplate("container.xml").inst(
             name=self.name,
             uuid=self.uuid,

lxc_net/templates/nic.network

@@ -0,0 +1,8 @@
+[Match]
+MACAddress={{ mac }}
+
+[Network]
+DHCP=no
+{% if ipv4 %}Address={{ ipv4 }}/{{ ipv4.prefix }}{% endif %}
+{% if ipv6 %}Address={{ ipv6 }}/{{ ipv6.prefix }}{% endif %}
+LinkLocalAddressing=ipv6