First commit

bird/conf/unet.conf

@@ -0,0 +1,43 @@
+ipv4 table unet4;
+
+function unet_is_valid_network_v4() {
+  return net ~ [
+    10.50.0.0/16+,
+    10.88.0.0/16+,
+    10.21.0.0/16+,
+    10.188.0.0/16+,
+    172.20.0.0/14+
+  ];
+}
+
+protocol pipe unet4_sync {
+  table unet4;
+  peer table master4;
+  export filter {
+    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    accept;
+    };
+}
+
+function unet_is_self_net() {
+  return net ~ [
+    10.188.18.8/29,
+    172.20.0.0/14
+  ];
+}
+
+protocol static route_unet_export_v4 {
+    route 10.188.18.8/29 reject; 
+    route 172.20.0.0/14 reject;
+
+    ipv4 {
+        table unet4;
+        import filter {
+            bgp_large_community.add((UNET_ASN,3,0));# 不允许导出到内核
+            bgp_large_community.add((UNET_ASN,1,0));# 不允许传输到ibgp
+            bgp_large_community.add((UNET_ASN,200,0));# 传输到Ebgp
+            accept;
+        };
+        export none;
+    };
+}