profiles/ds-lite: Connect to Netcologne with PPP DS-Lite

hosts/carbon/configuration.nix

@@ -6,6 +6,7 @@
       ./hardware-configuration.nix
 
       ./dns.nix
+      ./ds-lite-ncfttb.nix
       ./mdns.nix
       ./net-dsl.nix
       ./net-gastnetz.nix
@@ -16,7 +17,7 @@
       ./net-printer.nix
       ./net-voip.nix
       ./ntp.nix
-      ./ppp.nix
+      ./ppp-ncfttb.nix
       ./scan-to-gpg.nix
       ./wg-clerie.nix
     ];