Fix:add dn42 and change config

bird/net/unet.conf

@@ -1,18 +1,63 @@
+# 公网处理
+protocol pipe unet4_inet4_sync {
+  table unet4;
+  peer table inet4;
+  export filter {
+    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    if is_bogon_prefix() then reject;
+    bgp_path.empty; 
+    accept;
+    };
+  import none;
+}
+
+protocol pipe unet6_inet6_sync {
+  table unet6;
+  peer table inet6;
+  export filter {
+    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    if is_bogon_prefix() then reject;
+    bgp_path.empty; 
+    accept;
+    };
+    import none;
+}
+
+
+# DN42处理
+protocol pipe unet4_dn42v4_sync {
+  table unet4;
+  peer table dn42v4;
+  export filter {
+    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    if !is_dn42_prefix() then reject;
+    bgp_path.empty; 
+    accept;
+    };
+  import none;
+}
+
+protocol pipe unet6_dn42v6_sync {
+  table unet6;
+  peer table dn42v6;
+  export filter {
+    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    if !is_dn42_prefix() then reject;
+    bgp_path.empty; 
+    accept;
+    };
+    import none;
+}
+
+
+# 剩下的进入master  (只有V4)
 protocol pipe unet4_sync {
   table unet4;
   peer table master4;
   export filter {
     if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
+    if !unet_is_valid_network_v4() then reject;
     accept;
     };
   import none;
-}
-protocol pipe unet6_sync {
-  table unet6;
-  peer table master6;
-  export filter {
-    if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
-    accept;
-    };
-    import none;
 }