diff --git a/flake.lock b/flake.lock
index 80063bc..33f2306 100644
--- a/flake.lock
+++ b/flake.lock
@@ -288,11 +288,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1730785428,
-        "narHash": "sha256-Zwl8YgTVJTEum+L+0zVAWvXAGbWAuXHax3KzuejaDyo=",
+        "lastModified": 1731139594,
+        "narHash": "sha256-IigrKK3vYRpUu+HEjPL/phrfh7Ox881er1UEsZvw9Q4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4aa36568d413aca0ea84a1684d2d46f55dbabad7",
+        "rev": "76612b17c0ce71689921ca12d9ffdc9c23ce40b2",
         "type": "github"
       },
       "original": {
diff --git a/hosts/carbon/net-gastnetz.nix b/hosts/carbon/net-gastnetz.nix
index 361cc46..2ce3c9a 100644
--- a/hosts/carbon/net-gastnetz.nix
+++ b/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
     };
diff --git a/hosts/carbon/net-heimnetz.nix b/hosts/carbon/net-heimnetz.nix
index 36e42dd..40b8e05 100644
--- a/hosts/carbon/net-heimnetz.nix
+++ b/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 {};
diff --git a/hosts/carbon/net-iot.nix b/hosts/carbon/net-iot.nix
index 96da523..6b0cd7b 100644
--- a/hosts/carbon/net-iot.nix
+++ b/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 {};
diff --git a/hosts/carbon/net-mgmt.nix b/hosts/carbon/net-mgmt.nix
index b4dec25..c6c48da 100644
--- a/hosts/carbon/net-mgmt.nix
+++ b/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;
       };
     };
   '';
diff --git a/hosts/zinc/programs.nix b/hosts/zinc/programs.nix
index 0c04215..edf86ea 100644
--- a/hosts/zinc/programs.nix
+++ b/hosts/zinc/programs.nix
@@ -7,6 +7,8 @@
 
     blender
     #cura # libarcus library is currently broken, required for curaengine
+
+    mumble
   ];
 
 }