bundles/wide-dhcp6c: introduce, add to home.router

bundles/wide-dhcp6c/files/dhcp6c.conf

@@ -0,0 +1,17 @@
+interface ${source} {
+    send ia-pd 0;
+};
+
+id-assoc pd 0 {
+% for iface, subnet_id in sorted(targets.items()):
+    prefix-interface ${iface} {
+        sla-len ${subnet_len};
+        sla-id ${subnet_id};
+        ifid ${subnet_id};
+    };
+% endfor
+};
+
+profile default {
+  information-only;
+};

bundles/wide-dhcp6c/files/ip-down

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+systemctl stop wide-dhcpv6-client
+
+% for interface, subnet_id in sorted(targets.items()):
+for IP in $(ip -6 addr show dev ${interface} | grep inet6 | awk '{print $2}' | grep -vF 'fe80::')
+do
+    ip -6 addr del $IP dev ${interface}
+done
+% endfor

bundles/wide-dhcp6c/files/ip-up

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+INTERFACE=$1
+
+if [[ "$INTERFACE" != "${source}" ]]
+then
+    echo "wide-dhcp6c is not configured to work on $INTERFACE"
+    exit 0
+fi
+
+systemctl start wide-dhcpv6-client

bundles/wide-dhcp6c/files/wide-dhcpv6-client.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=WIDE-DHCPv6-Client
+After=network-online.target
+
+[Service]
+PIDFile=/run/dhcp6c.pid
+ExecStart=/usr/sbin/dhcp6c -c /etc/wide-dhcpv6/dhcp6c.conf -p /run/dhcp6c.pid -f ${source}
+
+[Install]
+WantedBy=default.target

bundles/wide-dhcp6c/items.py

@@ -0,0 +1,58 @@
+if node.metadata.get('wide-dhcp6c', {}).get('integrate-with-pppd', False):
+    files['/etc/ppp/ip-up.d/wide-dhcp6c'] = {
+        'source': 'ip-up',
+        'content_type': 'mako',
+        'context': {
+            'source': node.metadata['wide-dhcp6c']['source'],
+        },
+        'mode': '0755',
+    }
+    files['/etc/ppp/ip-down.d/wide-dhcp6c'] = {
+        'source': 'ip-down',
+        'content_type': 'mako',
+        'context': {
+            'targets': node.metadata['wide-dhcp6c']['targets'],
+        },
+        'mode': '0755',
+    }
+
+    # Will be started and stopped by pppd.
+    should_be_running = None
+    should_be_enabled = False
+else:
+    should_be_running = True
+    should_be_enabled = True
+
+files['/etc/wide-dhcpv6/dhcp6c.conf'] = {
+    'content_type': 'mako',
+    'context': {
+        'source': node.metadata['wide-dhcp6c']['source'],
+        'targets': node.metadata['wide-dhcp6c']['targets'],
+        'subnet_len': node.metadata['wide-dhcp6c']['subnet_len'],
+    },
+    'triggers': {
+        'svc_systemd:wide-dhcpv6-client:restart',
+    },
+}
+
+files['/etc/systemd/system/wide-dhcpv6-client.service'] = {
+    'content_type': 'mako',
+    'context': {
+        'source': node.metadata['wide-dhcp6c']['source'],
+    },
+    'triggers': {
+        'action:systemd-reload',
+        'svc_systemd:wide-dhcpv6-client:restart',
+    },
+}
+
+svc_systemd = {
+    'wide-dhcpv6-client': {
+        'running': should_be_running,
+        'enabled': should_be_enabled,
+        'needs': {
+            'file:/etc/systemd/system/wide-dhcpv6-client.service',
+            'file:/etc/wide-dhcpv6/dhcp6c.conf',
+        },
+    },
+}

bundles/wide-dhcp6c/metadata.py

@@ -0,0 +1,18 @@
+defaults = {
+    'apt': {
+        'packages': {
+            'wide-dhcpv6-client': {},
+        },
+    },
+    'iptables': {
+        'bundle_rules': {
+            'wide-dhcp6c': [
+                'ip6tables -A INPUT -p udp -s ff00::/12 -j ACCEPT',
+                'ip6tables -A INPUT -p udp -s fe80::/10 -j ACCEPT',
+            ],
+        },
+    },
+    'wide-dhcp6c': {
+        'subnet_len': '8',
+    },
+}

nodes/home/router.py

@@ -6,6 +6,7 @@ nodes['home.router'] = {
         'iptables',
         'pppd',
         'dhcpd',
+        'wide-dhcp6c',
     },
     'groups': set(),
     'metadata': {
@@ -74,6 +75,13 @@ nodes['home.router'] = {
             'cpu': 2,
             'ram': 2,
         },
+        'wide-dhcp6c': {
+            'integrate-with-pppd': True,
+            'source': 'ppp0',
+            'targets': {
+                'enp1s0.42': '1',
+            },
+        },
     },
     'os': 'debian',
     'os_version': (10,),