hosts/carbon: Change DSL uplink to netcologne

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}"