diff --git a/bird/bird.conf b/bird/bird.conf
index 7e74b17..bf19ab2 100644
--- a/bird/bird.conf
+++ b/bird/bird.conf
@@ -13,8 +13,8 @@ protocol kernel {
         import none;
         export filter {
             if source = RTS_STATIC then reject;
-            if !is_bogon_prefix() then {
-                krt_prefsrc = LOCAL_V6_kernel;
+            if is_dn42_prefix() then {
+                krt_prefsrc = DN42_V6_kernel;
                 accept;
             }
             reject;
@@ -33,8 +33,8 @@ protocol kernel {
                 krt_prefsrc = UNET_V4_kernel;
                 accept;
             }
-            if !is_bogon_prefix() then {
-                krt_prefsrc = LOCAL_V4_kernel;
+            if is_dn42_prefix() then {
+                krt_prefsrc = DN42_V4_kernel;
                 accept;
             }
             reject;
diff --git a/bird/conf/aaa_ipconfig.conf b/bird/conf/aaa_ipconfig.conf
new file mode 100644
index 0000000..0d6c8a6
--- /dev/null
+++ b/bird/conf/aaa_ipconfig.conf
@@ -0,0 +1,42 @@
+function is_self_net() {
+  return net ~ [
+    44.32.191.0/24
+    ];
+}
+
+
+function is_self_net_v6() {
+  return net ~ [
+    2406:840:e600::/44{44,48},
+    2a0f:1cc5:10::/44{44,48}
+    ];
+}
+
+
+function unet_is_self_net() {
+  return net ~ [
+    10.188.6.0/23+,
+    10.188.5.124/30,
+    44.32.191.16/28,
+    44.32.191.7/32
+  ];
+}
+
+function unet_is_self_net_v6() {
+  return net ~ [
+    2406:840:e603::/48{48,56},
+    2406:840:e60e::/56
+    ];
+}
+
+function dn42_is_self_net() {
+  return net ~ [
+    172.20.21.0/26+
+  ];
+}
+
+function dn42_is_self_net_v6() {
+  return net ~ [
+    fde8:936e:ee29::/48+
+    ];
+}
diff --git a/bird/conf/dn42.conf b/bird/conf/dn42.conf
new file mode 100644
index 0000000..349163d
--- /dev/null
+++ b/bird/conf/dn42.conf
@@ -0,0 +1,28 @@
+protocol static route_dn42_export_v4 {
+    route 172.20.21.0/26 reject; 
+
+    ipv4 {
+        table dn42v4;
+        import filter {
+            bgp_large_community.add((DN42_ASN,3,0));# 不允许导出到内核
+            bgp_large_community.add((DN42_ASN,1,0));# 不允许传输到ibgp
+            bgp_large_community.add((DN42_ASN,200,0));# 传输到Ebgp
+            accept;
+        };
+        export none;
+    };
+}
+
+protocol static route_dn42_export_v6 {
+    route fde8:936e:ee29::/48 reject; 
+    ipv6 {
+        table dn42v6;
+        import filter {
+            bgp_large_community.add((DN42_ASN,3,0));# 不允许导出到内核
+            bgp_large_community.add((DN42_ASN,1,0));# 不允许传输到ibgp
+            bgp_large_community.add((DN42_ASN,200,0));# 传输到Ebgp
+            accept;
+        };
+        export none;
+    };
+}
\ No newline at end of file
diff --git a/bird/conf/inet_func.conf b/bird/conf/inet_func.conf
deleted file mode 100644
index eee9599..0000000
--- a/bird/conf/inet_func.conf
+++ /dev/null
@@ -1,13 +0,0 @@
-function is_self_net() {
-  return net ~ [
-    44.32.191.0/24
-    ];
-}
-
-
-function is_self_net_v6() {
-  return net ~ [
-    2406:840:e600::/44{44,48},
-    2a0f:1cc5:10::/44{44,48}
-    ];
-}
diff --git a/bird/conf/unet.conf b/bird/conf/unet.conf
index 4fc6c90..0961ae1 100644
--- a/bird/conf/unet.conf
+++ b/bird/conf/unet.conf
@@ -1,13 +1,3 @@
-
-function unet_is_self_net() {
-  return net ~ [
-    10.188.6.0/23+,
-    10.188.5.124/30,
-    44.32.191.16/28,
-    44.32.191.7/32
-  ];
-}
-
 protocol static route_unet_export_v4 {
     route 10.188.6.0/23 reject; 
     route 10.188.5.124/30 reject;
@@ -25,14 +15,6 @@ protocol static route_unet_export_v4 {
     };
 }
 
-
-function unet_is_self_net_v6() {
-  return net ~ [
-    2406:840:e603::/48{48,56},
-    2406:840:e60e::/56
-    ];
-}
-
 protocol static route_unet_export_v6 {
     route 2406:840:e603::/48 reject; 
     route 2406:840:e60e::/56 reject;
diff --git a/bird/function/dn42.conf b/bird/function/dn42.conf
new file mode 100644
index 0000000..960b18f
--- /dev/null
+++ b/bird/function/dn42.conf
@@ -0,0 +1,14 @@
+define DN42_PREFIXES_V4 = [
+    172.20.0.0/14+
+];
+define DN42_PREFIXES_V6 = [
+    fd00::/8+
+];
+
+function is_dn42_prefix() {
+    case net.type {
+        NET_IP4: return net ~ DN42_PREFIXES_V4;
+        NET_IP6: return net ~ DN42_PREFIXES_V6;
+        else: print "is_dn42_prefix: unexpected net.type ", net.type, " ", net; return false;
+    }
+}
\ No newline at end of file
diff --git a/bird/function/tables.conf b/bird/function/tables.conf
index d25a505..ce9c19d 100644
--- a/bird/function/tables.conf
+++ b/bird/function/tables.conf
@@ -1,6 +1,8 @@
 ipv4 table inet4;
 ipv6 table inet6;
-ipv4 table ospf4;
-ipv6 table ospf6;
+ipv4 table dn42v4;
+ipv6 table dn42v6;
 ipv4 table unet4;
-ipv6 table unet6;
\ No newline at end of file
+ipv6 table unet6;
+ipv4 table ospf4;
+ipv6 table ospf6;
\ No newline at end of file
diff --git a/bird/function/unet.conf b/bird/function/unet.conf
index 5ca6a47..5a7515a 100644
--- a/bird/function/unet.conf
+++ b/bird/function/unet.conf
@@ -10,7 +10,7 @@ function unet_is_valid_network_v4() {
 function unet_is_valid_network_v4_anynet() {
   return net ~ [
     44.32.191.0/24+,
-    172.20.0.0/14+
+    172.20.21.0/26+
   ];
 }
 
@@ -23,6 +23,7 @@ function unet_is_valid_network_v4_allnet(){
 function unet_is_voalid_net_v6(){
   return net ~ [
     2406:840:e600::/44{44,64},
-    2a0f:1cc5:0010::/44{44,64}
+    2a0f:1cc5:0010::/44{44,64},
+    fde8:936e:ee29::/48{44,64}
   ];
 }
\ No newline at end of file
diff --git a/bird/net/dn42.conf b/bird/net/dn42.conf
new file mode 100644
index 0000000..fcaa521
--- /dev/null
+++ b/bird/net/dn42.conf
@@ -0,0 +1,17 @@
+protocol pipe dn42v4_sync {
+  table dn42v4;
+  peer table master4;
+  export filter {
+    if bgp_large_community ~ [(DN42_ASN, 3,*)] then reject;
+    accept;
+    };
+}
+
+protocol pipe dn42v6_sync {
+  table dn42v6;
+  peer table master6;
+  export filter {
+    if bgp_large_community ~ [(DN42_ASN, 3,*)] then reject;
+    accept;
+    };
+}
\ No newline at end of file
diff --git a/bird/net/inet.conf b/bird/net/inet.conf
new file mode 100644
index 0000000..993723c
--- /dev/null
+++ b/bird/net/inet.conf
@@ -0,0 +1,34 @@
+protocol kernel {
+    scan time 20;
+    kernel table 102;
+    ipv4 {
+        table inet4;
+        import none;
+        export filter {
+            if source = RTS_STATIC then reject;
+            if !is_bogon_prefix() then {
+                krt_prefsrc = LOCAL_V4_kernel;
+                accept;
+            }
+            reject;
+        };
+    };
+};
+
+
+protocol kernel {
+    scan time 20;
+    kernel table 102;
+    ipv6 {
+        table inet6;
+        import none;
+        export filter {
+            if source = RTS_STATIC then reject;
+            if !is_bogon_prefix() then {
+                krt_prefsrc = LOCAL_V6_kernel;
+                accept;
+            }
+            reject;
+        };
+    };
+};
\ No newline at end of file
diff --git a/bird/net/inet4.conf b/bird/net/inet4.conf
deleted file mode 100644
index 0350c92..0000000
--- a/bird/net/inet4.conf
+++ /dev/null
@@ -1,17 +0,0 @@
-protocol kernel {
-    scan time 20;
-    kernel table 102;
-    merge paths yes limit 4;
-    ipv4 {
-        table inet4;
-        import none;
-        export filter {
-            if source = RTS_STATIC then reject;
-            if !is_bogon_prefix() then {
-                krt_prefsrc = LOCAL_V4_kernel;
-                accept;
-            }
-            reject;
-        };
-    };
-};
\ No newline at end of file
diff --git a/bird/net/inet6.conf b/bird/net/inet6.conf
deleted file mode 100644
index 9d00e1e..0000000
--- a/bird/net/inet6.conf
+++ /dev/null
@@ -1,9 +0,0 @@
-protocol pipe inet6_sync {
-  table inet6;
-  peer table master6;
-  export filter {
-    if bgp_large_community ~ [(LOCAL_ASN, 3,*)] then reject;
-    accept;
-    };
-  import none;
-}
\ No newline at end of file
diff --git a/bird/net/ospf.conf b/bird/net/ospf.conf
index e178521..a9a208f 100644
--- a/bird/net/ospf.conf
+++ b/bird/net/ospf.conf
@@ -1,6 +1,6 @@
 protocol pipe ospf4_sync {
   table ospf4;
-  peer table master4;
+  peer table unet4;
   export filter {
     if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
     accept;
@@ -10,7 +10,7 @@ protocol pipe ospf4_sync {
 
 protocol pipe ospf6_sync {
   table ospf6;
-  peer table master6;
+  peer table unet6;
   export filter {
     if bgp_large_community ~ [(UNET_ASN, 3,*)] then reject;
     accept;
diff --git a/bird/net/unet.conf b/bird/net/unet.conf
index 75fa550..a9e1883 100644
--- a/bird/net/unet.conf
+++ b/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;
 }
\ No newline at end of file
diff --git a/bird/peers/dn42/ibgp.conf b/bird/peers/dn42/ibgp.conf
new file mode 100644
index 0000000..7c9972a
--- /dev/null
+++ b/bird/peers/dn42/ibgp.conf
@@ -0,0 +1,4 @@
+protocol bgp ibgp_unet_hk1 from dn42_ibgp {
+    source address fe80:15:3376:3::2:2;
+    neighbor fe80:15:3376:3::3:2%pccw1 as DN42_ASN;
+}
\ No newline at end of file
diff --git a/bird/template/dn42.conf b/bird/template/dn42.conf
new file mode 100644
index 0000000..e821d45
--- /dev/null
+++ b/bird/template/dn42.conf
@@ -0,0 +1,63 @@
+template bgp dn42_bgp_up {
+    graceful restart;
+    local as DN42_ASN;
+    ipv4 {
+        table dn42v4;
+        import filter {
+          if is_dn42_prefix() && !dn42_is_self_net() then accept;
+          reject;
+        };
+        export filter { if is_dn42_prefix() && source ~ [RTS_STATIC, RTS_BGP] then accept; else reject; };
+        import limit 9000 action block; 
+    };
+    ipv6 {
+        table dn42v6;
+        import filter {
+          if is_dn42_prefix() && !dn42_is_self_net_v6() then accept;
+          reject;
+        };
+        export filter { if is_dn42_prefix() && source ~ [RTS_STATIC, RTS_BGP] then accept; else reject; };
+        import limit 9000 action block; 
+    };
+}
+
+template bgp dn42_ibgp {
+    graceful restart;
+    local as DN42_ASN;
+    med metric;
+    direct;
+    ipv4 {
+        table dn42v4;
+        next hop self;
+        gateway direct;
+        import filter { 
+            if bgp_large_community ~ [(DN42_ASN, 1,*)] then reject;
+            if !is_dn42_prefix() then reject;
+            if dn42_is_self_net() then reject;
+            accept; 
+        };
+        export filter { 
+            if bgp_large_community ~ [(DN42_ASN, 1,*)] then reject;
+            if !is_dn42_prefix() then reject;
+            if dn42_is_self_net() then reject;
+            accept;
+            };
+    };
+    ipv6 {
+        table dn42v6;
+        next hop self;
+        gateway direct;
+        import filter { 
+            if bgp_large_community ~ [(DN42_ASN, 1,*)] then reject;
+            if !is_dn42_prefix() then reject;
+            if dn42_is_self_net_v6() then reject;
+            accept; 
+        };
+        export filter { 
+            if bgp_large_community ~ [(DN42_ASN, 1,*)] then reject;
+            if !is_dn42_prefix() then reject;
+            if dn42_is_self_net_v6() then reject;
+            accept;
+            };
+    };
+}
\ No newline at end of file
diff --git a/bird/template/include.conf b/bird/template/include.conf
index 86d9008..be13aab 100644
--- a/bird/template/include.conf
+++ b/bird/template/include.conf
@@ -2,6 +2,8 @@ include "/etc/bird/template/inet.conf";
 include "/etc/bird/template/inet_ixp.conf";
 include "/etc/bird/peers/inet/*";
 
+include "/etc/bird/template/dn42.conf";
+include "/etc/bird/peers/dn42/*.conf";
 
 include "/etc/bird/template/unet.conf";
 include "/etc/bird/peers/unet/*.conf";
diff --git a/bird/template/inet.conf b/bird/template/inet.conf
index 6c0c5a7..fc7893b 100644
--- a/bird/template/inet.conf
+++ b/bird/template/inet.conf
@@ -1,23 +1,88 @@
+filter filter_inet4_bgp_import {
+    if is_self_net() then reject; 
+    if is_bogon_prefix() || (bgp_path.len > 100) then reject; 
+    bgp_large_community.empty;  
+    bgp_large_community.add((LOCAL_ASN,200,0));
+    accept;
+}
+
+filter filter_inet4_bgp_export {
+    if !is_self_net() then reject; 
+    if is_bogon_prefix() || (bgp_path.len > 100) then reject;
+    if source != RTS_STATIC then reject;
+    if bgp_large_community !~ [(LOCAL_ASN, 200,0)] then reject;      
+    bgp_large_community.empty;  
+    accept;
+}
+
+filter filter_inet6_bgp_import {
+    if is_self_net_v6() then reject; 
+    if is_bogon_prefix() || (bgp_path.len > 100) then reject; 
+    bgp_large_community.empty;  
+    bgp_large_community.add((LOCAL_ASN,200,0));# 传输到Ebgp
+    accept;
+}
+
+filter filter_inet6_bgp_export {
+    if !is_self_net_v6() then reject; 
+    if is_bogon_prefix() || (bgp_path.len > 100) then reject;
+    if source != RTS_STATIC then reject;
+    if bgp_large_community !~ [(LOCAL_ASN, 200,0)] then reject;      
+    bgp_large_community.empty;  
+    accept;
+}
+
+filter filter_inet4_ibgp_import {
+    if is_self_net() then reject; 
+    if is_bogon_prefix() then reject; 
+    if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
+    accept;
+}
+
+filter filter_inet4_ibgp_export {
+    if is_self_net() then reject; 
+    if is_bogon_prefix() then reject; 
+    if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
+    accept;
+}
+
+filter filter_inet6_ibgp_import {
+    if is_self_net_v6() then reject;
+    if is_bogon_prefix() then reject;
+    if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
+    accept;
+}
+
+filter filter_inet6_ibgp_export {
+    if is_self_net_v6() then reject;
+    if is_bogon_prefix() then reject;
+    if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
+    accept;
+}
+
+
+template bgp tpl_inet_up {
+    graceful restart;
+    local as LOCAL_ASN;
+    ipv4 {
+        table inet4;
+        import filter_inet4_bgp_import;
+        export filter_inet4_bgp_export;
+    };
+    ipv6 {
+        table inet6;
+        import filter_inet6_bgp_import;
+        export filter_inet6_bgp_export;
+    };
+}
+
 template bgp tpl_inet4_up {
     graceful restart;
     local as LOCAL_ASN;
     ipv4 {
         table inet4;
-        import filter {
-            if is_self_net() then reject; 
-            if is_bogon_prefix() || (bgp_path.len > 100) then reject; 
-            bgp_large_community.empty;  
-            bgp_large_community.add((LOCAL_ASN,200,0));
-            accept;
-        };
-        export filter {
-            if !is_self_net() then reject; 
-            if is_bogon_prefix() || (bgp_path.len > 100) then reject;
-            if source != RTS_STATIC then reject;
-            if bgp_large_community !~ [(LOCAL_ASN, 200,0)] then reject;      
-            bgp_large_community.empty;  
-            accept;
-        };
+        import filter_inet4_bgp_import;
+        export filter_inet4_bgp_export;
     };
 }
 
@@ -26,21 +91,29 @@ template bgp tpl_inet6_up {
     local as LOCAL_ASN;
     ipv6 {
         table inet6;
-        import filter {
-            if is_self_net_v6() then reject; 
-            if is_bogon_prefix() || (bgp_path.len > 100) then reject; 
-            bgp_large_community.empty;  
-            bgp_large_community.add((LOCAL_ASN,200,0));# 传输到Ebgp
-            accept;
-        };
-        export filter {
-            if !is_self_net_v6() then reject; 
-            if is_bogon_prefix() || (bgp_path.len > 100) then reject;
-            if source != RTS_STATIC then reject;
-            if bgp_large_community !~ [(LOCAL_ASN, 200,0)] then reject;      
-            bgp_large_community.empty;  
-            accept;
-        };
+        import filter_inet6_bgp_import;
+        export filter_inet6_bgp_export;
+    };
+}
+
+template bgp tpl_inet_ibgp {
+    graceful restart;
+    local as LOCAL_ASN;
+    med metric;
+    direct;
+    ipv4 {
+        table inet4;
+        next hop self;
+        gateway direct;
+        import filter_inet4_ibgp_import;
+        export filter_inet4_ibgp_export;
+    };
+    ipv6 {
+        table inet6;
+        next hop self;
+        gateway direct;
+        import filter_inet6_ibgp_import;
+        export filter_inet6_ibgp_export;
     };
 }
 
@@ -53,18 +126,8 @@ template bgp tpl_inet4_ibgp {
         table inet4;
         next hop self;
         gateway direct;
-        import filter {
-            if is_self_net() then reject; 
-            if is_bogon_prefix() then reject; 
-            if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
-            accept;
-        };
-        export filter {
-            if is_self_net() then reject; 
-            if is_bogon_prefix() then reject; 
-            if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
-            accept;
-        };
+        import filter_inet4_ibgp_import;
+        export filter_inet4_ibgp_export;
     };
 }
 
@@ -77,17 +140,7 @@ template bgp tpl_inet6_ibgp {
         table inet6;
         next hop self;
         gateway direct;
-        import filter { 
-            if is_self_net_v6() then reject;
-            if is_bogon_prefix() then reject;
-            if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
-            accept;
-        };
-        export filter { 
-            if is_self_net_v6() then reject;
-            if is_bogon_prefix() then reject;
-            if bgp_large_community ~ [(LOCAL_ASN, 1,*)] then reject;
-            accept;
-            };
+        import filter_inet6_ibgp_import;
+        export filter_inet6_ibgp_export;
     };
-}
+}
\ No newline at end of file
diff --git a/bird/vars.conf b/bird/vars.conf
index b041e01..0ad91d0 100644
--- a/bird/vars.conf
+++ b/bird/vars.conf
@@ -2,6 +2,10 @@ define LOCAL_ASN = 153376;
 define LOCAL_V4_kernel = 44.32.191.7;
 define LOCAL_V6_kernel = 2406:840:e603::1;
 
+define DN42L_ASN = 4242423376;
+define DN42_V4_kernel = 172.20.21.7;
+define DN42_V6_kernel = fde8:936e:ee29:3000::1;
+
 define UNET_ASN = 4218818801;
 define UNET_V4_kernel = 10.188.6.2;
 
diff --git a/update.sh b/update.sh
index 484b906..167a5db 100644
--- a/update.sh
+++ b/update.sh
@@ -2,16 +2,25 @@
 
 cd 
 git clone https://git.nia.ink/brnet/bird_config.git
+rm -rf /etc/bird/net/
+mv ./bird_config/bird/net /etc/bird/ -rf
+
+rm -rf /etc/bird/function/
+mv ./bird_config/bird/function /etc/bird/ -rf
+
+rm -rf /etc/bird/template/
+mv ./bird_config/bird/template /etc/bird/ -rf
+mv ./bird_config/bird/peers/dn42 /etc/bird/peers -rf
+
+
 rm -rf /etc/bird/bird.conf
-mv bird_config/bird/bird.conf /etc/bird
-
-
-rm -rf /etc/bird/template
-mv bird_config/bird/template /etc/bird
+mv ./bird_config/bird/bird.conf /etc/bird/
+mv ./bird_config/bird/conf/dn42.conf /etc/bird/conf
+mv ./bird_config/bird/conf/aaa_ipconfig.conf /etc/bird/conf
 
 chmod -R 755 /etc/bird
 
-echo "老规矩哈"
+echo "剩下的文件可能需要手动更新，请手动更新后再行birdc c"
 cd 
 rm -rf bird_config