diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
index 0aef25317..02d28ddc8 100644
--- a/krebs/3modules/external/default.nix
+++ b/krebs/3modules/external/default.nix
@@ -1,19 +1,22 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
-  hosts = mapAttrs (_: recursiveUpdate {
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
     ci = false;
     external = true;
     monitoring = false;
-  }) {
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "external" { inherit hostName; }).address;
+  });
+
+in {
+  hosts = mapAttrs hostDefaults {
     sokrateslaptop = {
       owner = config.krebs.users.sokratess;
       nets = {
         retiolum = {
           ip4.addr = "10.243.142.104";
-          ip6.addr = "42:f8a1:044d:0f75:9d73:56d8:f432:c6cc";
           aliases = [
             "sokrateslaptop.r"
           ];
@@ -35,7 +38,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.201";
-          ip6.addr = "42:4234:6a6d:600::1";
           aliases = [
             "kruck.r"
           ];
@@ -62,7 +64,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.2.2";
-          ip6.addr = "42:2:5ca:da:3111::1";
           aliases = [
             "scardanelli.r"
           ];
@@ -90,7 +91,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.2.1";
-          ip6.addr = "42:2::0:3:05::1";
           aliases = [
             "homeros.r"
           ];
@@ -118,7 +118,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.168";
-          ip6.addr = "42:4992:6a6d:600::1";
           aliases = [
             "turingmachine.r"
           ];
@@ -148,14 +147,13 @@ with import <stockholm/lib>;
           ip4.addr = "129.215.197.11";
           aliases = [ "eddie.i" ];
         };
-        retiolum = rec {
+        retiolum = {
           via = internet;
           addrs = [
-            ip4.addr
-            ip6.addr
+            config.krebs.hosts.eddie.nets.retiolum.ip4.addr
+            config.krebs.hosts.eddie.nets.retiolum.ip6.addr
           ];
           ip4.addr = "10.243.29.170";
-          ip6.addr = "42:4992:6a6d:700::1";
           aliases = [ "eddie.r" ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -184,7 +182,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.171";
-          ip6.addr = "42:4992:6a6d:700::2";
           aliases = [ "rock.r" ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -214,7 +211,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = internet;
           ip4.addr = "10.243.29.172";
-          ip6.addr = "42:4992:6a6d:800::1";
           aliases = [ "inspector.r" ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -239,7 +235,6 @@ with import <stockholm/lib>;
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.29.173";
-          ip6.addr = "42:4992:6a6d:900::1";
           aliases = [ "dpdkm.r" ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -268,14 +263,13 @@ with import <stockholm/lib>;
           ip6.addr = "2a03:4000:13:31e::1";
           aliases = [ "eve.i" ];
         };
-        retiolum = rec {
+        retiolum = {
           via = internet;
           addrs = [
-            ip4.addr
-            ip6.addr
+            config.krebs.hosts.eve.nets.retiolum.ip4.addr
+            config.krebs.hosts.eve.nets.retiolum.ip6.addr
           ];
           ip4.addr = "10.243.29.174";
-          ip6.addr = "42:4992:6a6d:a00::1";
           aliases = [ "eve.r" ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
diff --git a/krebs/3modules/jeschli/default.nix b/krebs/3modules/jeschli/default.nix
index c0cb601bc..4a8af435b 100644
--- a/krebs/3modules/jeschli/default.nix
+++ b/krebs/3modules/jeschli/default.nix
@@ -1,17 +1,20 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
-  hosts = mapAttrs (_: recursiveUpdate {
-    owner = config.krebs.users.jeschli;
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
     ci = true;
-  }) {
+    owner = config.krebs.users.jeschli;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "jeschli" { inherit hostName; }).address;
+  });
+
+in {
+  hosts = mapAttrs hostDefaults {
     brauerei = {
       nets = {
         retiolum = {
           ip4.addr = "10.243.27.29";
-          ip6.addr = "42::29";
           aliases = [
             "brauerei.r"
           ];
@@ -48,7 +51,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.27.27";
-          ip6.addr = "42::27";
           aliases = [
             "reagenzglas.r"
           ];
@@ -92,7 +94,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = internet;
           ip4.addr = "10.243.27.30";
-          ip6.addr = "42::30";
           aliases = [
             "enklave.r"
             "cgit.enklave.r"
@@ -131,7 +132,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.27.31";
-          ip6.addr = "42::31";
           aliases = [
             "bolide.r"
           ];
diff --git a/krebs/3modules/krebs/default.nix b/krebs/3modules/krebs/default.nix
index 889ee2817..59fc43af8 100644
--- a/krebs/3modules/krebs/default.nix
+++ b/krebs/3modules/krebs/default.nix
@@ -1,20 +1,24 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
-let
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.krebs;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "krebs" { inherit hostName; }).address;
+  });
+
   testHosts = genAttrs [
     "test-arch"
     "test-centos6"
     "test-centos7"
     "test-all-krebs-modules"
   ] (name: {
-    owner = config.krebs.users.krebs;
     inherit name;
     cores = 1;
     nets = {
       retiolum = {
         ip4.addr = "10.243.73.57";
-        ip6.addr = "42:0:0:0:0:0:0:7357";
         tinc.pubkey = ''
           -----BEGIN RSA PUBLIC KEY-----
           MIIBCgKCAQEAy41YKF/wpHLnN370MSdnAo63QUW30aw+6O79cnaJyxoL6ZQkk4Nd
@@ -29,14 +33,12 @@ let
     };
   });
 in {
-  hosts = {
+  hosts = mapAttrs hostDefaults {
     hotdog = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.77.3";
-          ip6.addr = "42:0:0:0:0:0:77:3";
           aliases = [
             "hotdog.r"
             "build.r"
@@ -61,11 +63,9 @@ in {
     };
     onebutton = {
       cores = 1;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.101";
-          ip6.addr = "42:0:0:0:0:0:0:101";
           aliases = [
             "onebutton.r"
           ];
@@ -92,11 +92,9 @@ in {
     };
     puyak = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.77.2";
-          ip6.addr = "42:0:0:0:0:0:77:2";
           aliases = [
             "puyak.r"
             "build.puyak.r"
@@ -120,7 +118,6 @@ in {
     };
     wolf = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         shack = {
           ip4.addr =  "10.42.2.150" ;
@@ -135,7 +132,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.77.1";
-          ip6.addr = "42:0:0:0:0:0:77:1";
           aliases = [
             "wolf.r"
             "build.wolf.r"
diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index f06d62586..0d8513a69 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -1,20 +1,22 @@
-{ config, ... }:
 with import <stockholm/lib>;
-let
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    ci = true;
+    monitoring = true;
+    owner = config.krebs.users.lass;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "lass" { inherit hostName; }).address;
+  });
 
-  rip6 = krebs.genipv6 "retiolum" "lass";
   wip6 = krebs.genipv6 "wirelum" "lass";
 
-in
-{
+in {
   dns.providers = {
     "lassul.us" = "zones";
   };
-  hosts = mapAttrs (_: recursiveUpdate {
-    owner = config.krebs.users.lass;
-    ci = true;
-    monitoring = true;
-  }) {
+  hosts = mapAttrs hostDefaults {
     prism = rec {
       cores = 4;
       extraZones = {
@@ -54,7 +56,6 @@ in
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.103";
-          ip6.addr = "42:0000:0000:0000:0000:0000:0000:15ab";
           aliases = [
             "prism.r"
             "cache.prism.r"
@@ -118,7 +119,6 @@ in
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.123";
-          ip6.addr = "42:0:0:0:0:0:0:123";
           aliases = [
             "archprism.r"
           ];
@@ -150,7 +150,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.81.176";
-          ip6.addr = "42:dc25:60cf:94ef:759b:d2b6:98a9:2e56";
           aliases = [
             "uriel.r"
             "cgit.uriel.r"
@@ -176,7 +175,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.2";
-          ip6.addr = "42:0:0:0:0:0:0:dea7";
           aliases = [
             "mors.r"
             "cgit.mors.r"
@@ -209,7 +207,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.4";
-          ip6.addr = "42:0:0:0:0:0:0:50d4";
           aliases = [
             "shodan.r"
             "cgit.shodan.r"
@@ -242,7 +239,6 @@ in
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.114";
-          ip6.addr = "42:0:0:0:0:0:01ca:1205";
           aliases = [
             "icarus.r"
             "cgit.icarus.r"
@@ -275,7 +271,6 @@ in
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.115";
-          ip6.addr = "42:0:0:0:0:0:daed:a105";
           aliases = [
             "daedalus.r"
             "cgit.daedalus.r"
@@ -301,7 +296,6 @@ in
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.116";
-          ip6.addr = "42:0:0:0:0:0:0:1101";
           aliases = [
             "skynet.r"
             "cgit.skynet.r"
@@ -327,7 +321,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.133.77";
-          ip6.addr = "42:0:0:0:0:0:717:7137";
           aliases = [
             "littleT.r"
           ];
@@ -368,7 +361,6 @@ in
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.1.3";
-          ip6.addr = "42::1:3";
           aliases = [
             "xerxes.r"
           ];
@@ -410,7 +402,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.13";
-          ip6.addr = "42:0:0:0:0:0:0:12ed";
           aliases = [
             "red.r"
           ];
@@ -440,7 +431,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.14";
-          ip6.addr = "42:0:0:0:0:0:0:14";
           aliases = [
             "yellow.r"
           ];
@@ -477,7 +467,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.77";
-          ip6.addr = "42:0:0:0:0:0:0:77";
           aliases = [
             "blue.r"
           ];
@@ -521,7 +510,6 @@ in
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.19";
-          ip6.addr = "42::19";
           aliases = [
             "morpheus.r"
           ];
diff --git a/krebs/3modules/makefu/default.nix b/krebs/3modules/makefu/default.nix
index 188fbc461..d6c1f0b61 100644
--- a/krebs/3modules/makefu/default.nix
+++ b/krebs/3modules/makefu/default.nix
@@ -1,20 +1,27 @@
-{ config, ... }:
-
-with import <stockholm/lib>;
 ## generate keys with:
 # tinc generate-keys
 # ssh-keygen -f ssh.id_ed25519 -t ed25519 -C host
-let
+
+with import <stockholm/lib>;
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.makefu;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "makefu" { inherit hostName; }).address;
+  });
+
   pub-for = name: builtins.readFile (./ssh + "/${name}.pub");
+
 in {
-  hosts = mapAttrs (_: setAttr "owner" config.krebs.users.makefu) {
+  hosts = mapAttrs hostDefaults {
     cake = rec {
       cores = 4;
       ci = false;
       nets = {
         retiolum = {
           ip4.addr = "10.243.136.236";
-          ip6.addr  = "42:b3b2:9552:eef0:ee67:f3b3:8d33:eee1";
           aliases = [
             "cake.r"
           ];
@@ -39,7 +46,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.136.237";
-          ip6.addr  = "42:b3b2:9552:eef0:ee67:f3b3:8d33:eee2";
           aliases = [
             "crapi.r"
           ];
@@ -65,7 +71,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.177.9";
-          ip6.addr = "42:f63:ddf8:7520:cfec:9b61:d807:1dce";
           aliases = [
             "drop.r"
           ];
@@ -90,7 +95,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.227.163";
-          ip6.addr  = "42:e23f:ae0e:ea25:72ff:4ab8:9bd9:38a6";
           aliases = [
             "studio.r"
           ];
@@ -116,7 +120,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.113.98";
-          # ip6.addr  = "42:5cf1:e7f2:3fd:cd4c:a1ee:ec71:7096";
           aliases = [
             "fileleech.r"
           ];
@@ -147,7 +150,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.80.249";
-          ip6.addr  = "42:ecb0:376:b37d:cf47:1ecf:f32b:a3b9";
           aliases = [
             "latte.r"
           ];
@@ -171,7 +173,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.210";
-          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0001";
           aliases = [
             "pnp.r"
             "cgit.pnp.r"
@@ -195,7 +196,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.84";
-          ip6.addr = "42:ff6b:5f0b:460d:2cee:4d05:73f7:5566";
           aliases = [
             "darth.r"
           ];
@@ -267,7 +267,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.212";
-          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0002";
           aliases = [
             "tsp.r"
           ];
@@ -295,7 +294,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.91";
-          ip6.addr = "42:0b2c:d90e:e717:03dc:9ac1:7c30:a4db";
           aliases = [
             "x.r"
           ];
@@ -329,7 +327,6 @@ in {
           '';
         };
         #wiregrill = {
-        #  ip6.addr = "42:4200:0000:0000:0000:0000:0000:a4db";
         #  aliases = [
         #    "x.w"
         #  ];
@@ -347,7 +344,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.1.91";
-          ip6.addr = "42:0b2c:d90e:e717:03dd:9ac1:0000:a400";
           aliases = [
             "vbob.r"
           ];
@@ -386,7 +382,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.0.153";
-          ip6.addr = "42:9143:b4c0:f981:6030:7aa2:8bc5:4110";
           aliases = [
             "pigstarter.r"
           ];
@@ -422,7 +417,6 @@ in {
         retiolum = {
           via = internet;
           ip4.addr = "10.243.29.169";
-          ip6.addr = "42:6e1e:cc8a:7cef:827:f938:8c64:baad";
           aliases = [
             "wry.r"
             "graph.wry.r"
@@ -460,7 +454,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.153.102";
-          ip6.addr = "42:4b0b:d990:55ba:8da8:630f:dc0e:aae0";
           aliases = [
             "filepimp.r"
           ];
@@ -491,7 +484,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.0.89";
-          ip6.addr = "42:f9f0::10";
           aliases = [
             "omo.r"
             "dcpp.omo.r"
@@ -536,7 +528,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.214.15";
-          # ip6.addr = "42:5a02:2c30:c1b1:3f2e:7c19:2496:a732";
           aliases = [
             "wbob.r"
             "hydra.wbob.r"
@@ -596,7 +587,6 @@ in {
         };
         #wiregrill = {
         #  via = internet;
-        #  ip6.addr = "42:4200:0000:0000:0000:0000:0000:70d3";
         #  aliases = [
         #    "gum.w"
         #  ];
@@ -605,7 +595,6 @@ in {
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.213";
-          ip6.addr = "42:f9f0:0000:0000:0000:0000:0000:70d3";
           aliases = [
             "nextgum.r"
             "graph.r"
@@ -673,7 +662,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.205.131";
-          ip6.addr = "42:490d:cd82:d2bb:56d5:abd1:b88b:e8b4";
           aliases = [
             "shoney.r"
           ];
@@ -698,7 +686,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.83.237";
-          ip6.addr  = "42:af50:99cf:c185:f1a8:14d5:acb:8101";
           aliases = [
             "sdev.r"
           ];
@@ -736,7 +723,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.211.172";
-          ip6.addr = "42:472a:3d01:bbe4:4425:567e:592b:065d";
           aliases = [
             "flap.r"
           ];
@@ -759,7 +745,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.231.219";
-          ip6.addr = "42:f7bf:178d:4b68:1c1b:42e8:6b27:6a72";
           aliases = [
             "nukular.r"
           ];
@@ -782,7 +767,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.124.21";
-          ip6.addr = "42:9898:a8be:ce56:0ee3:b99c:42c5:109e";
           aliases = [
             "heidi.r"
           ];
@@ -872,7 +856,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.189.130";
-          ip6.addr = "42:c64e:011f:9755:31e1:c3e6:73c0:af2d";
           aliases = [
             "filebitch.r"
           ];
@@ -895,7 +878,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.26.29";
-          ip6.addr = "42:927a:3d59:1cb3:29d6:1a08:78d3:812e";
           aliases = [
             "excobridge.r"
           ];
@@ -918,7 +900,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.226.213";
-          ip6.addr = "42:432e:2379:0cd2:8486:f3b5:335a:5d83";
           aliases = [
             "horisa.r"
           ];
@@ -947,7 +928,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.57.85";
-          ip6.addr = "42:2f06:b899:a3b5:1dcf:51a4:a02b:8731";
           aliases = [
             "wooki.r"
           ];
@@ -970,7 +950,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.163";
-          ip6.addr = "42:b67b:5752:a730:5f28:d80d:6b37:5bda";
           aliases = [
             "senderechner.r"
           ];
@@ -995,7 +974,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.144.142";
-          ip6.addr  = "42:4bf8:94b:eec5:69e2:c837:686e:f278";
           aliases = [
             "tcac-0-1.r"
           ];
@@ -1025,7 +1003,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.139.184";
-          ip6.addr = "42:d568:6106:ba30:753b:0f2a:8225:b1fb";
           aliases = [
             "muhbaasu.r"
           ];
@@ -1048,7 +1025,6 @@ in {
         nets = {
           retiolum = {
             ip4.addr = "10.243.183.236";
-            ip6.addr = "42:8ca8:d2e4:adf6:5c0f:38cb:e9ef:eb3c";
             aliases = [
               "tpsw.r"
             ];
diff --git a/krebs/3modules/tv/default.nix b/krebs/3modules/tv/default.nix
index 71670d336..0683492bc 100644
--- a/krebs/3modules/tv/default.nix
+++ b/krebs/3modules/tv/default.nix
@@ -1,19 +1,24 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.tv;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "tv" { inherit hostName; }).address;
+  });
+
+in {
   dns.providers = {
     "viljetic.de" = "regfish";
   };
-  hosts = mapAttrs (_: setAttr "owner" config.krebs.users.tv) {
+  hosts = mapAttrs hostDefaults {
     alnus = {
       ci = true;
       cores = 2;
       nets = {
         retiolum = {
           ip4.addr = "10.243.21.1";
-          ip6.addr = "42::2101";
           aliases = [
             "alnus.r"
           ];
@@ -38,7 +43,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.20.1";
-          ip6.addr = "42::2001";
           aliases = [
             "mu.r"
           ];
@@ -79,7 +83,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = config.krebs.hosts.ni.nets.internet;
           ip4.addr = "10.243.113.223";
-          ip6.addr = "42:4522:25f8:36bb:8ccb:150:231a:2af4";
           aliases = [
             "ni.r"
             "cgit.ni.r"
@@ -114,7 +117,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.0.110";
-          ip6.addr = "42:2d5:733f:d6da:c0f5:2bb7:2b18:9ec";
           aliases = [
             "nomic.r"
             "cgit.nomic.r"
@@ -158,7 +160,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.37";
-          ip6.addr = "42::1337";
           aliases = [
             "wu.r"
             "cgit.wu.r"
@@ -185,7 +186,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.22.22";
-          ip6.addr = "42::2222";
           aliases = [
             "querel.r"
           ];
@@ -226,7 +226,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.38";
-          ip6.addr = "42::1338";
           aliases = [
             "xu.r"
             "cgit.xu.r"
@@ -261,7 +260,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.40";
-          ip6.addr = "42::1340";
           aliases = [
             "zu.r"
           ];