diff --git a/hosts/carbon/configuration.nix b/hosts/carbon/configuration.nix
index 051f1d3..b80e961 100644
--- a/hosts/carbon/configuration.nix
+++ b/hosts/carbon/configuration.nix
@@ -39,7 +39,7 @@
   networking.nat = {
     enableIPv6 = true;
     enable = true;
-    externalInterface = "ppp-dtagdsl";
+    externalInterface = "ppp-ncfttb";
     internalIPv6s = [ "fd00:152:152::/48" "fd00:3214:9453:4920::/64"];
     internalIPs = [ "10.152.0.0/16" "192.168.32.0/24" ];
   };
diff --git a/hosts/carbon/net-dsl.nix b/hosts/carbon/net-dsl.nix
index b67ae33..dcd26a5 100644
--- a/hosts/carbon/net-dsl.nix
+++ b/hosts/carbon/net-dsl.nix
@@ -3,17 +3,17 @@
 {
 
   ## DSL-Uplink
-  networking.vlans."enp1s0.7" = {
-    id = 7;
+  networking.vlans."enp1s0.10" = {
+    id = 10;
     interface = "enp1s0";
   };
-  networking.vlans."enp3s0.7" = {
-    id = 7;
+  networking.vlans."enp3s0.10" = {
+    id = 10;
     interface = "enp3s0";
   };
   networking.bridges."net-dsl".interfaces = [
-    "enp1s0.7"
-    "enp3s0.7"
+    "enp1s0.10"
+    "enp3s0.10"
   ];
 
 }
diff --git a/hosts/carbon/net-gastnetz.nix b/hosts/carbon/net-gastnetz.nix
index 2ce3c9a..1ddab6c 100644
--- a/hosts/carbon/net-gastnetz.nix
+++ b/hosts/carbon/net-gastnetz.nix
@@ -61,7 +61,7 @@
 
   # net-gastnetz can only access internet
   clerie.firewall.extraForwardFilterCommands = ''
-    ip46tables -A forward-filter -i net-gastnetz -o ppp-dtagdsl -j ACCEPT
+    ip46tables -A forward-filter -i net-gastnetz -o ppp-ncfttb -j ACCEPT
     ip46tables -A forward-filter -i net-gastnetz -j DROP
     ip46tables -A forward-filter -o net-gastnetz -j DROP
   '';
diff --git a/hosts/carbon/ppp.nix b/hosts/carbon/ppp.nix
index 200b161..14ede68 100644
--- a/hosts/carbon/ppp.nix
+++ b/hosts/carbon/ppp.nix
@@ -4,11 +4,11 @@
 
   services.pppd = {
     enable = true;
-    peers.dtagdsl = {
+    peers.ncfttb = {
       config = ''
         plugin pppoe.so net-dsl
-        user "''${PPPD_DTAGDSL_USERNAME}"
-        ifname ppp-dtagdsl
+        user "''${PPPD_NETCOLOGNE_USERNAME}"
+        ifname ppp-ncfttb
         persist
         maxfail 0
         holdoff 5
@@ -24,9 +24,9 @@
     };
   };
 
-  environment.etc."ppp/peers/dtagdsl".enable = false;
+  environment.etc."ppp/peers/ncfttb".enable = false;
 
-  systemd.services."pppd-dtagdsl".serviceConfig = let
+  systemd.services."pppd-ncfttb".serviceConfig = let
     preStart = ''
       mkdir -p /etc/ppp/peers
 
@@ -34,22 +34,22 @@
       umask u=rw,g=,o=
 
       # Copy config and substitute username
-      rm -f /etc/ppp/peers/dtagdsl
-      ${pkgs.envsubst}/bin/envsubst -i "${config.environment.etc."ppp/peers/dtagdsl".source}" > /etc/ppp/peers/dtagdsl
+      rm -f /etc/ppp/peers/ncfttb
+      ${pkgs.envsubst}/bin/envsubst -i "${config.environment.etc."ppp/peers/ncfttb".source}" > /etc/ppp/peers/ncfttb
 
       # Copy login secrets
       rm -f /etc/ppp/pap-secrets
-      cat ${config.sops.secrets.pppd-dtagdsl-secrets.path} > /etc/ppp/pap-secrets
+      cat ${config.sops.secrets.pppd-ncfttb-secrets.path} > /etc/ppp/pap-secrets
       rm -f /etc/ppp/chap-secrets
-      cat ${config.sops.secrets.pppd-dtagdsl-secrets.path} > /etc/ppp/chap-secrets
+      cat ${config.sops.secrets.pppd-ncfttb-secrets.path} > /etc/ppp/chap-secrets
     '';
 
     preStartFile = pkgs.writeShellApplication {
-      name = "pppd-dtagdsl-pre-start";
+      name = "pppd-ncfttb-pre-start";
       text = preStart;
     };
   in {
-    EnvironmentFile = config.sops.secrets.pppd-dtagdsl-username.path;
+    EnvironmentFile = config.sops.secrets.pppd-ncfttb-username.path;
     ExecStartPre = [
       # "+" marks script to be executed without priviledge restrictions
       "+${lib.getExe preStartFile}"
diff --git a/hosts/carbon/secrets.json b/hosts/carbon/secrets.json
index f3c77f3..77c2b6f 100644
--- a/hosts/carbon/secrets.json
+++ b/hosts/carbon/secrets.json
@@ -1,21 +1,17 @@
 {
 	"wg-monitoring": "ENC[AES256_GCM,data:+k5MgBrj/psMCE1T2jDtCCJI9Q7L+wJ3j83inNkeGp3LSUjoAPtBp4YoyL4=,iv:C19g/Lqi+cWAyiJBMNDtgLc3SDNI9bMBrBPWn+26mVY=,tag:9zIoawuGeGCMbOX1HKR/sQ==,type:str]",
-	"pppd-dtagdsl-username": "ENC[AES256_GCM,data:JC7EyyMoN0p5YwnS9W5I0G5Omhk5usw28UiJrCfifGr+2FUgMrtFYAHQdrtWAELvYNBQDPgrHMmQjGQLhpqqK0hH,iv:/q+Fm63GVBApGInyS8i39V/lo6iv+I2omVh47deq+o8=,tag:LkR+1zTDNWuYkhH2iWT7SA==,type:str]",
-	"pppd-dtagdsl-secrets": "ENC[AES256_GCM,data:c5pOb8It1py/9NXNTgLvt9zmsBVbSLHJt4iXWiNA+Osvomw3r7pgoO/JJh9ujomPMnOlDwN7g+pJ,iv:W36gA8E1mWchN6+8hdMdt2epv/RdS91T5ANB/JTcHCE=,tag:7eZ3fZkjERCVJCXYrABnlQ==,type:str]",
+	"pppd-ncfttb-username": "ENC[AES256_GCM,data:vyOCNm23xsD3Kj+R7zqnBjH4jEIfYpx/YUUGPcVzqMs9pnFEembahtFTl2sNzOFXLfYCYg==,iv:gMfi/6jldkXCnfdvhu5X1VKj58sVsPR8IX8iEECPfgk=,tag:PJGyIASP6RPAdVULEnn+Gg==,type:str]",
+	"pppd-ncfttb-secrets": "ENC[AES256_GCM,data:IEAguET78vdzRo47UvxbDdz+kKgYWVxYakPPu5rNAZ4BCui7DUG3qm2X9bBdHSMA,iv:Q8D58HXkCoVbqwFoYk+dizXNcEP1J63uMaDSNEzfg2g=,tag:R/xG3owmbVDOLM79sfBQjA==,type:str]",
 	"wg-clerie": "ENC[AES256_GCM,data:OEZg8ZoLAdVhKkvB0ai13ID3gPnVUU/xkOjZ4KiJ9MnRbcFu5HBd7Nw6iNwh,iv:edPuaehya2ZvYKkiBqNUbXVDAxAT6yNgETnWtd6it94=,tag:cX12szdQfAcC6cij6zk6Dw==,type:str]",
 	"sops": {
-		"kms": null,
-		"gcp_kms": null,
-		"azure_kv": null,
-		"hc_vault": null,
 		"age": [
 			{
 				"recipient": "age16mln27e2p58gu6dpxfclttmuzfnq39mv62kthjpps33g3nl3scfq449857",
 				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB3Rkd5WFE3aE5EQzY5ZXV4\nbXVGYmxTdVg1ekRpVjlRUnozY2tMTGloL21RCktjZW95OU9ZZ2owTCtMR1NxaXJn\na2VYS2ttb3VhSjNXOG84UUJtYU04QjAKLS0tIGd3aHM0RldFYnVFdDRVS0Vhc3BF\nckJhYmN6a1FJUC9ibks1cGlRaU1zbFkKE4ClunQ3XGAILwluC6iYFs+rlR02PdhK\njOmPbOlS0aNG0hoC7Z6aetgpj689AkJgl68QVcyvm+ecHH7TOT7l1A==\n-----END AGE ENCRYPTED FILE-----\n"
 			}
 		],
-		"lastmodified": "2024-08-13T14:06:43Z",
-		"mac": "ENC[AES256_GCM,data:yGKY0fi3KQWGHBeyNtQ8EJ6561dKRZ5aAjO9zq3odDtX75i2RSjORIlNjBsVvegBzeo8AkwwnzxNPt2sHl6MKDZfEsysWAi8Wolh4UvHk087AnR/uKvtG6t4uUaNIWej2DEzxUtTQ8QP1afsdqGCf0vZVruNcJ4u2xiQbN2vJPc=,iv:CDXJ5/P+h0Enq/0EL1su1Mw55FVYLy4XPSoUCkRkt+U=,tag:AvRfEDYMBunyIQIVCPbXag==,type:str]",
+		"lastmodified": "2025-10-24T19:16:49Z",
+		"mac": "ENC[AES256_GCM,data:ADhCQ7JxrEq+5ssevuuQVf3uyHcrcNVSzdT8bkFfDFVEE1hKv8q9QsGxhIaKtv4N2gt079fy0YA+WFKH6H8zWb5ONepH4H/mAek2SYgAtmVsxwdWY13zswsJUPi2CfbaCWOqppb9IiDb8+RCbzY2u/8Qqwk8gx/0uw2hr3IJrhM=,iv:c1/TS+W4pQgh2oPT77LX+dUL929YppRYdZCmMl2yN+M=,tag:fTk1sxdeT9xFjDMhqiHZAg==,type:str]",
 		"pgp": [
 			{
 				"created_at": "2024-05-10T13:05:56Z",
@@ -24,6 +20,6 @@
 			}
 		],
 		"unencrypted_suffix": "_unencrypted",
-		"version": "3.8.1"
+		"version": "3.10.2"
 	}
-}
\ No newline at end of file
+}