Implement IPv4 Route Policy to prefer babel routes

group_vars/role_corerouter/imageprofile.yml

@@ -1,5 +1,7 @@
 ---
 role_corerouter__packages__to_merge:
+  - bird2
+  - bird2c
   - babeld
   - luci-app-babeld
   - collectd-mod-dhcpleases

roles/cfg_openwrt/files/common/iproute2/rt_tables

@@ -0,0 +1,20 @@
+#
+# reserved values
+#
+128	prelocal
+255	local
+254	main
+253	default
+
+0	unspec
+#
+# local
+#
+#1	inr.ruhep
+
+10	babel-ff
+11	babel-default
+12      babel-src
+20      olsr-ff
+21	olsr-default
+

roles/cfg_openwrt/files/corerouter/babeld.conf

@@ -0,0 +1 @@
+export-table 12

roles/cfg_openwrt/files/corerouter/bird.conf

@@ -0,0 +1,47 @@
+log syslog all;
+debug protocols all;
+
+ipv4 table babel_src;
+ipv4 table babel_ff;
+ipv4 table babel_default;
+
+protocol device {
+}
+
+protocol kernel {
+        learn;
+        kernel table 12;
+	ipv4 {
+                table babel_src;
+		import all;
+	};
+}
+
+protocol kernel { 
+        kernel table 10;
+	ipv4 {
+                table babel_ff;
+		export all;
+	};
+}
+
+protocol kernel { 
+        kernel table 11;
+        ipv4 {             
+        	table babel_default;
+                export all;
+        };                 
+}
+
+
+protocol pipe {
+	table babel_src;
+	peer table babel_ff;
+	export where net != 0.0.0.0/0;
+}
+
+protocol pipe {
+        table babel_src;
+        peer table babel_default;
+        export where net = 0.0.0.0/0;
+} 

roles/cfg_openwrt/files/corerouter/iproute2/rt_tables

@@ -0,0 +1 @@
+../../common/iproute2/rt_tables

roles/cfg_openwrt/templates/common/config/network.j2

@@ -2,6 +2,28 @@
 {% set profile = wireless_profiles | selectattr('name', 'equalto', wireless_profile) | list | first %}
 {% set wifi_networks = profile | json_query('ifaces[].network') | default([], true) %}
 
+
+# Babel inserts into seperate route table, add that to lookup list for IPv6
+config rule6
+	option priority 33000
+        option lookup 'babel-src'
+
+# IPv4 Soft Migration by priotizing Babel over OLSR
+config rule
+	option priority 33100
+	option lookup 'babel-ff'
+
+config rule
+        option priority 33101
+        option lookup 'olsr-ff'
+
+config rule
+	option priority 33200
+	option lookup 'babel-default'
+config rule
+        option priority 33201
+        option lookup 'olsr-default'
+
 config interface 'loopback'
 	option device 'lo'
 	option proto 'static'

roles/cfg_openwrt/templates/corerouter/config/olsrd.j2

@@ -40,6 +40,8 @@ config olsrd
 	option OlsrPort '698'
 	option Willingness '3'
 	option TosValue '16'
+	option RtTable '20'
+	option RtTableDefault '21'
 
 config InterfaceDefaults
 	option MidValidityTime '500.0'