Merge pull request 'Add possibility to use extra linux network table' (#2) from linux-network-table into master

Reviewed-on: ansible_roles/dn42#2

defaults/main.yml

@@ -20,6 +20,8 @@ dn42_pingfinder_location: "/usr/bin/dn42_pingfinder"
 dn42_pingfinder_uuid: ""
 dn42_pingfinder_logfile: "/dev/null"
 
+dn42_configure_linux_network_table: no
+
 dn42_peers:
   - name: "neighbour"
     as: "4242424242"

tasks/main.yml

@@ -35,3 +35,14 @@
     - "ip a add {{ dn42_local_v6 }}/128 dev lo"
   notify: restart networking
 
+- name: Configure DN42 Table on loopback-interface
+  interfaces_file:
+    iface: "lo"
+    option: "post-up"
+    value: "{{ item }}"
+    state: present
+  with_items:
+    - "ip rule add table 42"
+    - "ip -6 rule add table 42"
+  when: dn42_configure_linux_network_table
+  notify: restart networking

templates/bird2/bird.conf.j2

@@ -15,6 +15,8 @@ define OWNNETSETv6 = [{{ dn42_local_subnet_v6 }}+];
 ################################################
 
 router id OWNIP;
+ipv4 table dn42_v4;
+ipv6 table dn42_v6;
 
 protocol device {
     scan time 10;
@@ -71,6 +73,7 @@ protocol kernel {
     scan time 20;
 
     ipv6 {
+        table dn42_v6;
         import none;
         export filter {
             if source = RTS_STATIC then reject;
@@ -78,12 +81,16 @@ protocol kernel {
             accept;
         };
     };
+    {% if dn42_configure_linux_network_table %}
+    kernel table 42;
+    {% endif %}
 };
 
 protocol kernel {
     scan time 20;
 
     ipv4 {
+        table dn42_v4;
         import none;
         export filter {
             if source = RTS_STATIC then reject;
@@ -91,12 +98,16 @@ protocol kernel {
             accept;
         };
     };
+    {% if dn42_configure_linux_network_table %}
+    kernel table 42;
+    {% endif %}
 }
 
 protocol static {
     route OWNNET reject;
 
     ipv4 {
+        table dn42_v4;
         import all;
         export none;
     };
@@ -106,6 +117,7 @@ protocol static {
     route OWNNETv6 reject;
 
     ipv6 {
+        table dn42_v6;
         import all;
         export none;
     };
@@ -116,6 +128,7 @@ template bgp dnpeers {
     path metric 1;
 
     ipv4 {
+        table dn42_v4;
         import filter {
           if is_valid_network() && !is_self_net() then {
             {% if dn42_enable_roa %}
@@ -134,6 +147,7 @@ template bgp dnpeers {
     };
 
     ipv6 {
+        table dn42_v6;
         import filter {
           if is_valid_network_v6() && !is_self_net_v6() then {
             {% if dn42_enable_roa %}