bird: IPv4 backbone L3 routing

roles/bird/handlers/main.yml

@@ -0,0 +1,7 @@
+---
+
+- name: Restart bird
+  service: name=bird state=restarted
+
+- name: Restart bird6
+  service: name=bird6 state=restarted

roles/bird/tasks/main.yml

@@ -0,0 +1,14 @@
+---
+
+- name: Install bird
+  apt: package={{ item }}
+  with_items:
+  - bird
+  - bird6
+
+- name: Configure bird
+  template: src=bird.conf.j2 dest=/etc/bird/bird.conf
+  notify: Restart bird
+
+- name: Enable bird
+  service: name=bird state=started enabled=yes

roles/bird/templates/bird.conf.j2

@@ -0,0 +1,29 @@
+# {{ ansible_managed }}
+
+log syslog all;
+
+router id {{ ansible_default_ipv4.address }};
+
+timeformat protocol iso long;
+
+protocol device {
+	 scan time 10;
+}
+
+protocol kernel {
+	metric 64;	# Use explicit kernel route metric to avoid collisions
+			# with non-BIRD routes in the kernel routing table
+	import none;
+	export all;	# Actually insert routes into the kernel routing table
+}
+
+protocol ospf bbmesh {
+	area 0 {
+		interface "br-*" {
+			stub yes;
+		};
+		interface "tun-*" {
+			type ptp;
+		};
+	};
+}

site.yml

@@ -11,6 +11,7 @@
   hosts: [gw11.regensburg.freifunk.net, gw21.regensburg.freifunk.net, gw31.regensburg.freifunk.net]
   roles:
   - batman
+  - bird
   - fastd
   - mesh-interfaces
   - exit-ipv4