flake.nix: Add lix

Advertise current prefixes more often than claimed addresses expire.
Also increased lifetimes for claimed addresses.

configuration/common/nix.nix

@@ -26,7 +26,6 @@
     experimental-features = [
       "flakes"
       "nix-command"
-      "repl-flake"
     ];
     substituters = [
       "https://nix-cache.clerie.de"
@@ -63,6 +62,8 @@
     };
   };
 
+  nix.package = pkgs.nixVersions.nix_2_18;
+
   documentation.doc.enable = false;
 
   environment.systemPackages = with pkgs; [

hosts/carbon/configuration.nix

@@ -7,6 +7,7 @@
       ../../configuration/router
 
       ./dns.nix
+      ./mdns.nix
       ./net-dsl.nix
       ./net-gastnetz.nix
       ./net-heimnetz.nix

hosts/carbon/mdns.nix

@@ -0,0 +1,17 @@
+{ pkgs, ... }:
+
+{
+
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+
+    allowInterfaces = [
+      "net-heimnetz"
+      "net-iot"
+    ];
+
+    reflector = true;
+  };
+
+}

hosts/carbon/net-gastnetz.nix

@@ -20,9 +20,10 @@
   services.radvd.config = ''
     interface net-gastnetz {
       AdvSendAdvert on;
+      MaxRtrAdvInterval 30;
       prefix ::/64 {
-        AdvValidLifetime 60;
-        AdvPreferredLifetime 30;
+        AdvValidLifetime 300;
+        AdvPreferredLifetime 120;
       };
       RDNSS 2620:fe::fe 2620:fe::9 {}; # Quad 9
     };

hosts/carbon/net-heimnetz.nix

@@ -22,9 +22,10 @@
   services.radvd.config = ''
     interface net-heimnetz {
       AdvSendAdvert on;
+      MaxRtrAdvInterval 30;
       prefix ::/64 {
-        AdvValidLifetime 60;
-        AdvPreferredLifetime 30;
+        AdvValidLifetime 300;
+        AdvPreferredLifetime 120;
       };
       RDNSS fd00:152:152::1 {};
       DNSSL net.clerie.de {};

hosts/carbon/net-iot.nix

@@ -23,9 +23,10 @@
   services.radvd.config = ''
     interface net-iot {
       AdvSendAdvert on;
+      MaxRtrAdvInterval 30;
       prefix ::/64 {
-        AdvValidLifetime 60;
-        AdvPreferredLifetime 30;
+        AdvValidLifetime 300;
+        AdvPreferredLifetime 120;
       };
       RDNSS fd00:152:152::1 {};
       DNSSL iot.clerie.de {};

hosts/carbon/net-mgmt.nix

@@ -20,9 +20,10 @@
   services.radvd.config = ''
     interface net-mgmt {
       AdvSendAdvert on;
+      MaxRtrAdvInterval 30;
       prefix ::/64 {
-        AdvValidLifetime 60;
-        AdvPreferredLifetime 30;
+        AdvValidLifetime 300;
+        AdvPreferredLifetime 120;
       };
     };
   '';

hosts/zinc/programs.nix

@@ -7,6 +7,8 @@
 
     blender
     #cura # libarcus library is currently broken, required for curaengine
+
+    mumble
   ];
 
 }