diff --git a/playbooks/bird.yml b/playbooks/bird.yml
index 58cfc1a..74297b0 100755
--- a/playbooks/bird.yml
+++ b/playbooks/bird.yml
@@ -296,6 +296,8 @@
             - 2001:1b48:2:103::d7:1
           as: "{{ bird__asn.zayo }}"
         import:
+          - prefix: "{{ bird__orig_prefixes.martians }}"
+            accept: false
           - accept: true
         export:
           - prefix: "{{ ['aurore', 'crans', 'viarezo']
@@ -316,12 +318,21 @@
             - 2a0c:700:28::1
           as: "{{ bird__asn.crans }}"
         import:
+          - prefix: "{{ bird__orig_prefixes.martians }}"
+            accept: false
           - prefix: "{{ bird__orig_prefixes.crans }}"
             sub: true
             accept: true
           - accept: false
         export:
-          - accept: true
+          - bgp_proto:
+              - viarezo
+              - zayo
+            accept: true
+          - prefix: "{{ bird__orig_prefixes.aurore }}"
+            sub: true
+            accept: true
+          - accept: false
       - name: viarezo
         local:
           address:
@@ -345,17 +356,22 @@
           - prefix: "{{ bird__orig_prefixes.aurore }}"
             as_prepend:
               asn: "{{ bird__asn.aurore }}"
-              size: 3
-          - accept: true
+              size: 5
+          - bgp_proto:
+              - crans
+              - zayo
+            accept: true
+          - prefix: "{{ bird__orig_prefixes.aurore }}"
+            sub: true
+            accept: true
+          - accept: false
     bird__ospf_broadcast_interfaces:
       ens22: null
     bird__ospf_stub_interfaces:
       - ens19
       - ens20
       - ens21
-    bird__static_unreachable:
-      - 45.66.108.0/22
-      - 2a09:6840::/29
+    bird__static_unreachable: "{{ bird__orig_prefixes.aurore }}"
   roles:
     - bird
 ...