retiolum: don't hardcode routing prefixes

28 files changed, 228 insertions, 247 deletions

diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index 3d54900e4..b4686894e 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -8,15 +8,15 @@ with config.krebs.lib;
       cores = 4;
       nets = rec {
         internet = {
-          addrs4 = ["144.76.172.188"];
+          ip4.addr = "144.76.172.188";
           aliases = [
             "dishfire.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.133.99"];
-          addrs6 = ["42:0000:0000:0000:0000:0000:d15f:1233"];
+          ip4.addr = "10.243.133.99";
+          ip6.addr = "42:0000:0000:0000:0000:0000:d15f:1233";
           aliases = [
             "dishfire.retiolum"
             "dishfire.r"
@@ -40,15 +40,15 @@ with config.krebs.lib;
       cores = 2;
       nets = rec {
         internet = {
-          addrs4 = ["162.252.241.33"];
+          ip4.addr = "162.252.241.33";
           aliases = [
             "echelon.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.206.103"];
-          addrs6 = ["42:941e:2816:35f4:5c5e:206b:3f0b:f763"];
+          ip4.addr = "10.243.206.103";
+          ip6.addr = "42:941e:2816:35f4:5c5e:206b:3f0b:f763";
           aliases = [
             "echelon.retiolum"
             "echelon.r"
@@ -75,15 +75,15 @@ with config.krebs.lib;
       cores = 4;
       nets = rec {
         internet = {
-          addrs4 = ["213.239.205.240"];
+          ip4.addr = "213.239.205.240";
           aliases = [
             "prism.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.0.103"];
-          addrs6 = ["42:0000:0000:0000:0000:0000:0000:15ab"];
+          ip4.addr = "10.243.0.103";
+          ip6.addr = "42:0000:0000:0000:0000:0000:0000:15ab";
           aliases = [
             "prism.retiolum"
             "prism.r"
@@ -107,15 +107,15 @@ with config.krebs.lib;
     fastpoke = {
       nets = rec {
         internet = {
-          addrs4 = ["193.22.164.36"];
+          ip4.addr = "193.22.164.36";
           aliases = [
             "fastpoke.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.253.152"];
-          addrs6 = ["42:422a:194f:ff3b:e196:2f82:5cf5:bc00"];
+          ip4.addr = "10.243.253.152";
+          ip6.addr = "42:422a:194f:ff3b:e196:2f82:5cf5:bc00";
           aliases = [
             "fastpoke.retiolum"
             "fastpoke.r"
@@ -139,15 +139,15 @@ with config.krebs.lib;
       cores = 1;
       nets = rec {
         internet = {
-          addrs4 = ["104.167.113.104"];
+          ip4.addr = "104.167.113.104";
           aliases = [
             "cloudkrebs.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.206.102"];
-          addrs6 = ["42:941e:2816:35f4:5c5e:206b:3f0b:f762"];
+          ip4.addr = "10.243.206.102";
+          ip6.addr = "42:941e:2816:35f4:5c5e:206b:3f0b:f762";
           aliases = [
             "cloudkrebs.retiolum"
             "cloudkrebs.r"
@@ -172,12 +172,12 @@ with config.krebs.lib;
       cores = 1;
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.12"];
+          ip4.addr = "10.23.1.12";
           aliases = ["uriel.gg23"];
         };
         retiolum = {
-          addrs4 = ["10.243.81.176"];
-          addrs6 = ["42:dc25:60cf:94ef:759b:d2b6:98a9:2e56"];
+          ip4.addr = "10.243.81.176";
+          ip6.addr = "42:dc25:60cf:94ef:759b:d2b6:98a9:2e56";
           aliases = [
             "uriel.retiolum"
             "uriel.r"
@@ -203,12 +203,12 @@ with config.krebs.lib;
       cores = 2;
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.11"];
+          ip4.addr = "10.23.1.11";
           aliases = ["mors.gg23"];
         };
         retiolum = {
-          addrs4 = ["10.243.0.2"];
-          addrs6 = ["42:0:0:0:0:0:0:dea7"];
+          ip4.addr = "10.243.0.2";
+          ip6.addr = "42:0:0:0:0:0:0:dea7";
           aliases = [
             "mors.retiolum"
             "mors.r"
@@ -234,8 +234,8 @@ with config.krebs.lib;
       cores = 2;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.3"];
-          addrs6 = ["42:0:0:0:0:0:0:7105"];
+          ip4.addr = "10.243.0.3";
+          ip6.addr = "42:0:0:0:0:0:0:7105";
           aliases = [
             "helios.retiolum"
             "helios.r"
diff --git a/krebs/3modules/makefu/default.nix b/krebs/3modules/makefu/default.nix
index bd7c0db48..b93b34d24 100644
--- a/krebs/3modules/makefu/default.nix
+++ b/krebs/3modules/makefu/default.nix
@@ -8,8 +8,8 @@ with config.krebs.lib;
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.210"];
-          addrs6 = ["42:f9f1:0000:0000:0000:0000:0000:0001"];
+          ip4.addr = "10.243.0.210";
+          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0001";
           aliases = [
             "pnp.retiolum"
             "cgit.pnp.retiolum"
@@ -31,8 +31,8 @@ with config.krebs.lib;
       cores = 4;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.84"];
-          addrs6 = ["42:ff6b:5f0b:460d:2cee:4d05:73f7:5566"];
+          ip4.addr = "10.243.0.84";
+          ip6.addr = "42:ff6b:5f0b:460d:2cee:4d05:73f7:5566";
           aliases = [
             "darth.retiolum"
             "darth.r"
@@ -54,8 +54,8 @@ with config.krebs.lib;
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.212"];
-          addrs6 = ["42:f9f1:0000:0000:0000:0000:0000:0002"];
+          ip4.addr = "10.243.0.212";
+          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0002";
           aliases = [
             "tsp.retiolum"
           ];
@@ -81,8 +81,8 @@ with config.krebs.lib;
       cores = 2;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.91"];
-          addrs6 = ["42:0b2c:d90e:e717:03dc:9ac1:7c30:a4db"];
+          ip4.addr = "10.243.0.91";
+          ip6.addr = "42:0b2c:d90e:e717:03dc:9ac1:7c30:a4db";
           aliases = [
             "pornocauster.retiolum"
             "pornocauster.r"
@@ -108,8 +108,8 @@ with config.krebs.lib;
       cores = 2;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.1.91"];
-          addrs6 = ["42:0b2c:d90e:e717:03dd:9ac1:0000:a400"];
+          ip4.addr = "10.243.1.91";
+          ip6.addr = "42:0b2c:d90e:e717:03dd:9ac1:0000:a400";
           aliases = [
             "vbob.retiolum"
           ];
@@ -135,22 +135,22 @@ with config.krebs.lib;
       extraZones = {
         "krebsco.de" = ''
           euer              IN MX 1   aspmx.l.google.com.
-          pigstarter        IN A      ${head nets.internet.addrs4}
-          gold              IN A      ${head nets.internet.addrs4}
-          boot              IN A      ${head nets.internet.addrs4}
+          pigstarter        IN A      ${nets.internet.ip4.addr}
+          gold              IN A      ${nets.internet.ip4.addr}
+          boot              IN A      ${nets.internet.ip4.addr}
         '';
       };
       nets = {
         internet = {
-          addrs4 = ["192.40.56.122"];
-          addrs6 = ["2604:2880::841f:72c"];
+          ip4.addr = "192.40.56.122";
+          ip6.addr = "2604:2880::841f:72c";
           aliases = [
             "pigstarter.internet"
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.0.153"];
-          addrs6 = ["42:9143:b4c0:f981:6030:7aa2:8bc5:4110"];
+          ip4.addr = "10.243.0.153";
+          ip6.addr = "42:9143:b4c0:f981:6030:7aa2:8bc5:4110";
           aliases = [
             "pigstarter.retiolum"
           ];
@@ -171,18 +171,18 @@ with config.krebs.lib;
       cores = 1;
       extraZones = {
         "krebsco.de" = ''
-          euer           IN A  ${head nets.internet.addrs4}
-          wiki.euer      IN A  ${head nets.internet.addrs4}
-          wry            IN A  ${head nets.internet.addrs4}
+          euer           IN A  ${nets.internet.ip4.addr}
+          wiki.euer      IN A  ${nets.internet.ip4.addr}
+          wry            IN A  ${nets.internet.ip4.addr}
           io             IN NS wry.krebsco.de.
-          graphs         IN A  ${head nets.internet.addrs4}
-          paste       60 IN A  ${head nets.internet.addrs4}
-          tinc           IN A  ${head nets.internet.addrs4}
+          graphs         IN A  ${nets.internet.ip4.addr}
+          paste       60 IN A  ${nets.internet.ip4.addr}
+          tinc           IN A  ${nets.internet.ip4.addr}
         '';
       };
       nets = rec {
         internet = {
-          addrs4 = ["104.233.87.86"];
+          ip4.addr = "104.233.87.86";
           aliases = [
             "wry.internet"
             "paste.internet"
@@ -190,8 +190,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.29.169"];
-          addrs6 = ["42:6e1e:cc8a:7cef:827:f938:8c64:baad"];
+          ip4.addr = "10.243.29.169";
+          ip6.addr = "42:6e1e:cc8a:7cef:827:f938:8c64:baad";
           aliases = [
             "graphs.wry.retiolum"
             "graphs.retiolum"
@@ -228,8 +228,8 @@ with config.krebs.lib;
 
       nets = {
         retiolum = {
-          addrs4 = ["10.243.153.102"];
-          addrs6 = ["42:4b0b:d990:55ba:8da8:630f:dc0e:aae0"];
+          ip4.addr = "10.243.153.102";
+          ip6.addr = "42:4b0b:d990:55ba:8da8:630f:dc0e:aae0";
           aliases = [
             "filepimp.retiolum"
           ];
@@ -252,8 +252,8 @@ with config.krebs.lib;
 
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.89"];
-          addrs6 = ["42:f9f0::10"];
+          ip4.addr = "10.243.0.89";
+          ip6.addr = "42:f9f0::10";
           aliases = [
             "omo.retiolum"
             "omo.r"
@@ -277,8 +277,8 @@ with config.krebs.lib;
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.214.15"];
-          addrs6 = ["42:5a02:2c30:c1b1:3f2e:7c19:2496:a732"];
+          ip4.addr = "10.243.214.15";
+          ip6.addr = "42:5a02:2c30:c1b1:3f2e:7c19:2496:a732";
           aliases = [
               "wbob.retiolum"
           ];
@@ -301,24 +301,24 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
 
       extraZones = {
         "krebsco.de" = ''
-          share.euer        IN A      ${head nets.internet.addrs4}
-          mattermost.euer   IN A      ${head nets.internet.addrs4}
-          git.euer          IN A      ${head nets.internet.addrs4}
-          gum               IN A      ${head nets.internet.addrs4}
-          cgit.euer         IN A      ${head nets.internet.addrs4}
+          share.euer        IN A      ${nets.internet.ip4.addr}
+          mattermost.euer   IN A      ${nets.internet.ip4.addr}
+          git.euer          IN A      ${nets.internet.ip4.addr}
+          gum               IN A      ${nets.internet.ip4.addr}
+          cgit.euer         IN A      ${nets.internet.ip4.addr}
         '';
       };
       nets = rec {
         internet = {
-          addrs4 = ["195.154.108.70"];
+          ip4.addr = "195.154.108.70";
           aliases = [
             "gum.internet"
           ];
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.0.211"];
-          addrs6 = ["42:f9f0:0000:0000:0000:0000:0000:70d2"];
+          ip4.addr = "10.243.0.211";
+          ip6.addr = "42:f9f0:0000:0000:0000:0000:0000:70d2";
           aliases = [
             "gum.r"
             "gum.retiolum"
@@ -346,20 +346,20 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       extraZones = {
         "krebsco.de" = ''
-          mediengewitter    IN A      ${head nets.internet.addrs4}
-          flap              IN A      ${head nets.internet.addrs4}
+          mediengewitter    IN A      ${nets.internet.ip4.addr}
+          flap              IN A      ${nets.internet.ip4.addr}
         '';
       };
       nets = {
         internet = {
-          addrs4 = ["162.248.11.162"];
+          ip4.addr = "162.248.11.162";
           aliases = [
             "flap.internet"
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.211.172"];
-          addrs6 = ["42:472a:3d01:bbe4:4425:567e:592b:065d"];
+          ip4.addr = "10.243.211.172";
+          ip6.addr = "42:472a:3d01:bbe4:4425:567e:592b:065d";
           aliases = [
             "flap.retiolum"
             "flap.r"
@@ -382,8 +382,8 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.231.219"];
-          addrs6 = ["42:f7bf:178d:4b68:1c1b:42e8:6b27:6a72"];
+          ip4.addr = "10.243.231.219";
+          ip6.addr = "42:f7bf:178d:4b68:1c1b:42e8:6b27:6a72";
           aliases = [
             "nukular.r"
           ];
@@ -405,8 +405,8 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.124.21"];
-          addrs6 = ["42:9898:a8be:ce56:0ee3:b99c:42c5:109e"];
+          ip4.addr = "10.243.124.21";
+          ip6.addr = "42:9898:a8be:ce56:0ee3:b99c:42c5:109e";
           aliases = [
             "heidi.r"
           ];
@@ -428,7 +428,7 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.69.184"];
+          ip4.addr = "10.243.69.184";
           aliases = [
             "soundflower.r"
           ];
@@ -450,7 +450,7 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.120.19"];
+          ip4.addr = "10.243.120.19";
           aliases = [
             "falk.r"
           ];
@@ -472,8 +472,8 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 4;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.189.130"];
-          addrs6 = ["42:c64e:011f:9755:31e1:c3e6:73c0:af2d"];
+          ip4.addr = "10.243.189.130";
+          ip6.addr = "42:c64e:011f:9755:31e1:c3e6:73c0:af2d";
           aliases = [
             "filebitch.r"
           ];
@@ -495,8 +495,8 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.26.29"];
-          addrs6 = ["42:927a:3d59:1cb3:29d6:1a08:78d3:812e"];
+          ip4.addr = "10.243.26.29";
+          ip6.addr = "42:927a:3d59:1cb3:29d6:1a08:78d3:812e";
           aliases = [
             "excobridge.r"
           ];
@@ -518,14 +518,14 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         internet = {
-          addrs4 = ["148.251.47.69"];
+          ip4.addr = "148.251.47.69";
           aliases = [
             "wooki.internet"
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.57.85"];
-          addrs6 = ["42:2f06:b899:a3b5:1dcf:51a4:a02b:8731"];
+          ip4.addr = "10.243.57.85";
+          ip6.addr = "42:2f06:b899:a3b5:1dcf:51a4:a02b:8731";
           aliases = [
             "wooki.r"
           ];
@@ -547,8 +547,8 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 2;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.0.163"];
-          addrs6 = ["42:b67b:5752:a730:5f28:d80d:6b37:5bda/128"];
+          ip4.addr = "10.243.0.163";
+          ip6.addr = "42:b67b:5752:a730:5f28:d80d:6b37:5bda/128";
           aliases = [
             "senderechner.r"
           ];
@@ -570,14 +570,14 @@ TNs2RYfwDy/r6H/hDeB/BSngPouedEVcPwIDAQAB
       cores = 1;
       nets = {
         internet = {
-          addrs4 = ["217.160.206.154"];
+          ip4.addr = "217.160.206.154";
           aliases = [
             "muhbaasu.internet"
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.139.184"];
-          addrs6 = ["42:d568:6106:ba30:753b:0f2a:8225:b1fb"];
+          ip4.addr = "10.243.139.184";
+          ip6.addr = "42:d568:6106:ba30:753b:0f2a:8225:b1fb";
           aliases = [
             "muhbaasu.r"
           ];
diff --git a/krebs/3modules/miefda/default.nix b/krebs/3modules/miefda/default.nix
index 9a5866294..a03f7ff4d 100644
--- a/krebs/3modules/miefda/default.nix
+++ b/krebs/3modules/miefda/default.nix
@@ -8,8 +8,8 @@ with config.krebs.lib;
       cores = 4;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.111.112"];
-          addrs6 = ["42:0:0:0:0:0:111:112"];
+          ip4.addr = "10.243.111.112";
+          ip6.addr = "42:0:0:0:0:0:111:112";
           aliases = [
             "bobby.retiolum"
             "cgit.bobby.retiolum"
diff --git a/krebs/3modules/mv/default.nix b/krebs/3modules/mv/default.nix
index 3b4001e7a..20118c61f 100644
--- a/krebs/3modules/mv/default.nix
+++ b/krebs/3modules/mv/default.nix
@@ -8,8 +8,8 @@ with config.krebs.lib;
       cores = 4;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.111.111"];
-          addrs6 = ["42:0:0:0:0:0:111:111"];
+          ip4.addr = "10.243.111.111";
+          ip6.addr = "42:0:0:0:0:0:111:111";
           aliases = [
             "stro.retiolum"
             "cgit.stro.retiolum"
diff --git a/krebs/3modules/retiolum.nix b/krebs/3modules/retiolum.nix
index 61b4473e1..fe4dbd50c 100644
--- a/krebs/3modules/retiolum.nix
+++ b/krebs/3modules/retiolum.nix
@@ -11,26 +11,13 @@ let
   api = {
     enable = mkEnableOption "krebs.retiolum";
 
-    name = mkOption {
-      type = types.str;
-      default = config.networking.hostName;
-      # Description stolen from tinc.conf(5).
-      description = ''
-        This is the name which identifies this tinc daemon.  It must
-        be unique for the virtual private network this daemon will
-        connect to.  The Name may only consist of alphanumeric and
-        underscore characters.  If Name starts with a $, then the
-        contents of the environment variable that follows will be
-        used.  In that case, invalid characters will be converted to
-        underscores.  If Name is $HOST, but no such environment
-        variable exist, the hostname will be read using the
-        gethostnname() system call This is the name which identifies
-        the this tinc daemon.
-      '';
+    host = mkOption {
+      type = types.host;
+      default = config.krebs.build.host;
     };
 
     netname = mkOption {
-      type = types.str;
+      type = types.hostname;
       default = "retiolum";
       description = ''
         The tinc network name.
@@ -157,46 +144,34 @@ let
     uid = genid name;
   };
 
+  net = cfg.host.nets.${cfg.netname};
+
   tinc = cfg.tincPackage;
 
   iproute = cfg.iproutePackage;
 
-  confDir = pkgs.runCommand "retiolum" {
-    # TODO text
-    executable = true;
-    preferLocalBuild = true;
-  } ''
-    set -euf
-
-    mkdir -p $out
-
-    ln -s ${cfg.hostsPackage} $out/hosts
-
-    cat > $out/tinc.conf <<EOF
-    Name = ${cfg.name}
-    Device = /dev/net/tun
-    Interface = ${cfg.netname}
-    ${concatStrings (map (c : "ConnectTo = " + c + "\n") cfg.connectTo)}
-    PrivateKeyFile = /tmp/retiolum-rsa_key.priv
-    ${cfg.extraConfig}
-    EOF
-
-    # source: krebscode/painload/retiolum/scripts/tinc_setup/tinc-up
-    cat > $out/tinc-up <<EOF
-    host=$out/hosts/${cfg.name}
-    ${iproute}/sbin/ip link set \$INTERFACE up
-
-    addr4=\$(sed -n 's|^ *Subnet *= *\(10[.][^ ]*\) *$|\1|p' \$host)
-    if [ -n "\$addr4" ];then
-        ${iproute}/sbin/ip -4 addr add \$addr4 dev \$INTERFACE
-        ${iproute}/sbin/ip -4 route add 10.243.0.0/16 dev \$INTERFACE
-    fi
-    addr6=\$(sed -n 's|^ *Subnet *= *\(42[:][^ ]*\) *$|\1|p' \$host)
-    ${iproute}/sbin/ip -6 addr add \$addr6 dev \$INTERFACE
-    ${iproute}/sbin/ip -6 route add 42::/16 dev \$INTERFACE
-    EOF
-
-    chmod +x $out/tinc-up
-  '';
+  confDir = let
+    namePathPair = name: path: { inherit name path; };
+  in pkgs.linkFarm "${cfg.netname}-etc-tinc" (mapAttrsToList namePathPair {
+    "hosts" = cfg.hostsPackage;
+    "tinc.conf" = pkgs.writeText "${cfg.netname}-tinc.conf" ''
+      Name = ${cfg.host.name}
+      Interface = ${cfg.netname}
+      ${concatStrings (map (c: "ConnectTo = ${c}\n") cfg.connectTo)}
+      PrivateKeyFile = /tmp/retiolum-rsa_key.priv
+      ${cfg.extraConfig}
+    '';
+    "tinc-up" = pkgs.writeScript "${cfg.netname}-tinc-up" ''
+      ${iproute}/sbin/ip link set ${cfg.netname} up
+      ${optionalString (net.ip4 != null) ''
+        ${iproute}/sbin/ip -4 addr add ${net.ip4.addr} dev ${cfg.netname}
+        ${iproute}/sbin/ip -4 route add ${net.ip4.prefix} dev ${cfg.netname}
+      ''}
+      ${optionalString (net.ip6 != null) ''
+        ${iproute}/sbin/ip -6 addr add ${net.ip6.addr} dev ${cfg.netname}
+        ${iproute}/sbin/ip -6 route add ${net.ip6.prefix} dev ${cfg.netname}
+      ''}
+    '';
+  });
 
 in out
diff --git a/krebs/3modules/shared/default.nix b/krebs/3modules/shared/default.nix
index ccd15b569..47767d370 100644
--- a/krebs/3modules/shared/default.nix
+++ b/krebs/3modules/shared/default.nix
@@ -12,8 +12,8 @@ let
     cores = 1;
     nets = {
       retiolum = {
-        addrs4 = ["10.243.111.111"];
-        addrs6 = ["42:0:0:0:0:0:0:7357"];
+        ip4.addr = "10.243.111.111";
+        ip6.addr = "42:0:0:0:0:0:0:7357";
         aliases = [
           "test.r"
           "test.retiolum"
@@ -36,7 +36,7 @@ in {
     wolf = {
       nets = {
         shack = {
-          addrs4 = [ "10.42.2.150" ];
+          ip4.addr =  "10.42.2.150" ;
           aliases = [
             "wolf.shack"
             "graphite.shack"
@@ -45,8 +45,8 @@ in {
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.77.1"];
-          addrs6 = ["42:0:0:0:0:0:77:1"];
+          ip4.addr = "10.243.77.1";
+          ip6.addr = "42:0:0:0:0:0:77:1";
           aliases = [
             "wolf.retiolum"
             "cgit.wolf.retiolum"
diff --git a/krebs/3modules/tv/default.nix b/krebs/3modules/tv/default.nix
index f0f0c5e79..b0f0ce547 100644
--- a/krebs/3modules/tv/default.nix
+++ b/krebs/3modules/tv/default.nix
@@ -13,15 +13,15 @@ with config.krebs.lib;
         # TODO generate krebsco.de zone from nets and don't use extraZones at all
         "krebsco.de" = ''
           krebsco.de. 60 IN MX 5 mx23
-          mx23        60 IN A ${elemAt nets.internet.addrs4 0}
-          cd          60 IN A ${elemAt nets.internet.addrs4 0}
-          cgit        60 IN A ${elemAt nets.internet.addrs4 0}
-          cgit.cd     60 IN A ${elemAt nets.internet.addrs4 0}
+          mx23        60 IN A ${nets.internet.ip4.addr}
+          cd          60 IN A ${nets.internet.ip4.addr}
+          cgit        60 IN A ${nets.internet.ip4.addr}
+          cgit.cd     60 IN A ${nets.internet.ip4.addr}
         '';
       };
       nets = rec {
         internet = {
-          addrs4 = ["162.219.7.216"];
+          ip4.addr = "162.219.7.216";
           aliases = [
             "cd.i"
             "cd.internet"
@@ -34,8 +34,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.113.222"];
-          addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af3"];
+          ip4.addr = "10.243.113.222";
+          ip6.addr = "42:4522:25f8:36bb:8ccb:0150:231a:2af3";
           aliases = [
             "cd.r"
             "cd.retiolum"
@@ -66,7 +66,7 @@ with config.krebs.lib;
       cores = 2;
       nets = rec {
         internet = {
-          addrs4 = ["45.62.237.203"];
+          ip4.addr = "45.62.237.203";
           aliases = [
             "doppelbock.i"
             "doppelbock.internet"
@@ -74,8 +74,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.113.224"];
-          addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af5"];
+          ip4.addr = "10.243.113.224";
+          ip6.addr = "42:4522:25f8:36bb:8ccb:0150:231a:2af5";
           aliases = [
             "doppelbock.r"
             "doppelbock.retiolum"
@@ -101,7 +101,7 @@ with config.krebs.lib;
       cores = 1;
       nets = rec {
         internet = {
-          addrs4 = ["104.167.114.142"];
+          ip4.addr = "104.167.114.142";
           aliases = [
             "mkdir.i"
             "mkdir.internet"
@@ -109,8 +109,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.113.223"];
-          addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af4"];
+          ip4.addr = "10.243.113.223";
+          ip6.addr = "42:4522:25f8:36bb:8ccb:0150:231a:2af4";
           aliases = [
             "mkdir.r"
             "mkdir.retiolum"
@@ -136,12 +136,12 @@ with config.krebs.lib;
       extraZones = {
         # TODO generate krebsco.de zone from nets and don't use extraZones at all
         "krebsco.de" = ''
-          ire 60 IN A ${elemAt nets.internet.addrs4 0}
+          ire 60 IN A ${nets.internet.ip4.addr}
         '';
       };
       nets = rec {
         internet = {
-          addrs4 = ["198.147.22.115"];
+          ip4.addr = "198.147.22.115";
           aliases = [
             "ire.i"
             "ire.internet"
@@ -151,8 +151,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.231.66"];
-          addrs6 = ["42:b912:0f42:a82d:0d27:8610:e89b:490c"];
+          ip4.addr = "10.243.231.66";
+          ip6.addr = "42:b912:0f42:a82d:0d27:8610:e89b:490c";
           aliases = [
             "ire.r"
             "ire.retiolum"
@@ -175,7 +175,7 @@ with config.krebs.lib;
     kaepsele = {
       nets = {
         internet = {
-          addrs4 = ["92.222.10.169"];
+          ip4.addr = "92.222.10.169";
           aliases = [
             "kaepsele.i"
             "kaepsele.internet"
@@ -183,8 +183,8 @@ with config.krebs.lib;
           ];
         };
         retiolum = {
-          addrs4 = ["10.243.166.2"];
-          addrs6 = ["42:0b9d:6660:d07c:2bb7:4e91:1a01:2e7d"];
+          ip4.addr = "10.243.166.2";
+          ip6.addr = "42:0b9d:6660:d07c:2bb7:4e91:1a01:2e7d";
           aliases = [
             "kaepsele.r"
             "kaepsele.retiolum"
@@ -207,8 +207,8 @@ with config.krebs.lib;
       cores = 2;
       nets = {
         retiolum = {
-          addrs4 = ["10.243.20.1"];
-          addrs6 = ["42:0:0:0:0:0:0:2001"];
+          ip4.addr = "10.243.20.1";
+          ip6.addr = "42:0:0:0:0:0:0:2001";
           aliases = [
             "mu.r"
             "mu.retiolum"
@@ -232,13 +232,13 @@ with config.krebs.lib;
       cores = 2;
       nets = rec {
         gg23 = {
-          addrs4 = ["10.23.1.110"];
+          ip4.addr = "10.23.1.110";
           aliases = ["nomic.gg23"];
           ssh.port = 11423;
         };
         retiolum = {
-          addrs4 = ["10.243.0.110"];
-          addrs6 = ["42:02d5:733f:d6da:c0f5:2bb7:2b18:09ec"];
+          ip4.addr = "10.243.0.110";
+          ip6.addr = "42:02d5:733f:d6da:c0f5:2bb7:2b18:09ec";
           aliases = [
             "nomic.r"
             "nomic.retiolum"
@@ -264,7 +264,7 @@ with config.krebs.lib;
     ok = {
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.1"];
+          ip4.addr = "10.23.1.1";
           aliases = ["ok.gg23"];
         };
       };
@@ -273,7 +273,7 @@ with config.krebs.lib;
       cores = 1;
       nets = rec {
         internet = {
-          addrs4 = ["167.88.34.182"];
+          ip4.addr = "167.88.34.182";
           aliases = [
             "rmdir.i"
             "rmdir.internet"
@@ -281,8 +281,8 @@ with config.krebs.lib;
         };
         retiolum = {
           via = internet;
-          addrs4 = ["10.243.113.224"];
-          addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af5"];
+          ip4.addr = "10.243.113.224";
+          ip6.addr = "42:4522:25f8:36bb:8ccb:0150:231a:2af5";
           aliases = [
             "rmdir.r"
             "rmdir.retiolum"
@@ -307,7 +307,7 @@ with config.krebs.lib;
     schnabeldrucker = {
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.21"];
+          ip4.addr = "10.23.1.21";
           aliases = ["schnabeldrucker.gg23"];
         };
       };
@@ -315,7 +315,7 @@ with config.krebs.lib;
     schnabelscanner = {
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.22"];
+          ip4.addr = "10.23.1.22";
           aliases = ["schnabelscanner.gg23"];
         };
       };
@@ -324,7 +324,7 @@ with config.krebs.lib;
       cores = 4;
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.37"];
+          ip4.addr = "10.23.1.37";
           aliases = [
             "wu.gg23"
             "cache.wu.gg23"
@@ -332,8 +332,8 @@ with config.krebs.lib;
           ssh.port = 11423;
         };
         retiolum = {
-          addrs4 = ["10.243.13.37"];
-          addrs6 = ["42:0:0:0:0:0:0:1337"];
+          ip4.addr = "10.243.13.37";
+          ip6.addr = "42:0:0:0:0:0:0:1337";
           aliases = [
             "wu.r"
             "wu.retiolum"
@@ -360,13 +360,13 @@ with config.krebs.lib;
       cores = 4;
       nets = {
         gg23 = {
-          addrs4 = ["10.23.1.38"];
+          ip4.addr = "10.23.1.38";
           aliases = ["xu.gg23"];
           ssh.port = 11423;
         };
         retiolum = {
-          addrs4 = ["10.243.13.38"];
-          addrs6 = ["42:0:0:0:0:0:0:1338"];
+          ip4.addr = "10.243.13.38";
+          ip6.addr = "42:0:0:0:0:0:0:1338";
           aliases = [
             "xu.r"
             "xu.retiolum"
diff --git a/krebs/4lib/types.nix b/krebs/4lib/types.nix
index 7255dc3e1..24b4e14b1 100644
--- a/krebs/4lib/types.nix
+++ b/krebs/4lib/types.nix
@@ -63,28 +63,56 @@ types // rec {
 
   net = submodule ({ config, ... }: {
     options = {
+      name = mkOption {
+        type = label;
+        default = config._module.args.name;
+      };
       via = mkOption {
         type = nullOr net;
         default = null;
       };
       addrs = mkOption {
         type = listOf addr;
-        default = config.addrs4 ++ config.addrs6;
-        # TODO only default addrs make sense
-      };
-      addrs4 = mkOption {
-        type = listOf addr4;
-        default = [];
-      };
-      addrs6 = mkOption {
-        type = listOf addr6;
-        default = [];
+        default =
+          optional (config.ip4 != null) config.ip4.addr ++
+          optional (config.ip6 != null) config.ip6.addr;
+        readOnly = true;
       };
       aliases = mkOption {
         # TODO nonEmptyListOf hostname
         type = listOf hostname;
         default = [];
       };
+      ip4 = mkOption {
+        type = nullOr (submodule {
+          options = {
+            addr = mkOption {
+              type = addr4;
+            };
+            prefix = mkOption ({
+              type = str; # TODO routing prefix (CIDR)
+            } // optionalAttrs (config.name == "retiolum") {
+              default = "10.243.0.0/16";
+            });
+          };
+        });
+        default = null;
+      };
+      ip6 = mkOption {
+        type = nullOr (submodule {
+          options = {
+            addr = mkOption {
+              type = addr6;
+            };
+            prefix = mkOption ({
+              type = str; # TODO routing prefix (CIDR)
+            } // optionalAttrs (config.name == "retiolum") {
+              default = "42::/16";
+            });
+          };
+        });
+        default = null;
+      };
       ssh = mkOption {
         type = submodule {
           options = {
diff --git a/lass/1systems/cloudkrebs.nix b/lass/1systems/cloudkrebs.nix
index 98f509050..6cfba567a 100644
--- a/lass/1systems/cloudkrebs.nix
+++ b/lass/1systems/cloudkrebs.nix
@@ -2,9 +2,8 @@
 
 let
   inherit (import ../4lib { inherit pkgs lib; }) getDefaultGateway;
-  inherit (lib) head;
 
-  ip = (head config.krebs.build.host.nets.internet.addrs4);
+  ip = config.krebs.build.host.nets.internet.ip4.addr;
 in {
   imports = [
     ../.
diff --git a/lass/1systems/echelon.nix b/lass/1systems/echelon.nix
index 2ff6dba70..80611ee80 100644
--- a/lass/1systems/echelon.nix
+++ b/lass/1systems/echelon.nix
@@ -2,9 +2,8 @@
 
 let
   inherit (import ../4lib { inherit pkgs lib; }) getDefaultGateway;
-  inherit (lib) head;
 
-  ip = (head config.krebs.build.host.nets.internet.addrs4);
+  ip = config.krebs.build.host.nets.internet.ip4.addr;
 in {
   imports = [
     ../.
diff --git a/lass/1systems/prism.nix b/lass/1systems/prism.nix
index 4d40c8d59..20c919b9b 100644
--- a/lass/1systems/prism.nix
+++ b/lass/1systems/prism.nix
@@ -1,9 +1,7 @@
 { config, lib, pkgs, ... }:
 
 let
-  inherit (lib) head;
-
-  ip = (head config.krebs.build.host.nets.internet.addrs4);
+  ip = config.krebs.build.host.nets.internet.ip4.addr;
 in {
   imports = [
     ../.
diff --git a/lass/2configs/privoxy-retiolum.nix b/lass/2configs/privoxy-retiolum.nix
index 3a3641ad8..9059bbac8 100644
--- a/lass/2configs/privoxy-retiolum.nix
+++ b/lass/2configs/privoxy-retiolum.nix
@@ -1,8 +1,7 @@
 { config, lib, ... }:
 
 let
-  r_ip = (head config.krebs.build.host.nets.retiolum.addrs4);
-  inherit (lib) head;
+  r_ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 
 in {
   imports = [
diff --git a/lass/3modules/static_nginx.nix b/lass/3modules/static_nginx.nix
index 6e87e9853..6b5d19615 100644
--- a/lass/3modules/static_nginx.nix
+++ b/lass/3modules/static_nginx.nix
@@ -54,7 +54,7 @@ let
   user = config.services.nginx.user;
   group = config.services.nginx.group;
 
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
 
   imp = {
     krebs.nginx.servers = flip mapAttrs cfg ( name: { domain, folder, ssl, ... }: {
diff --git a/makefu/1systems/gum.nix b/makefu/1systems/gum.nix
index 710421659..7bac4398c 100644
--- a/makefu/1systems/gum.nix
+++ b/makefu/1systems/gum.nix
@@ -2,8 +2,8 @@
 
 with config.krebs.lib;
 let
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
-  internal-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in {
   imports = [
       ../.
diff --git a/makefu/1systems/wry.nix b/makefu/1systems/wry.nix
index edaf1b803..d9f8ded83 100644
--- a/makefu/1systems/wry.nix
+++ b/makefu/1systems/wry.nix
@@ -3,8 +3,8 @@
 with config.krebs.lib;
 let
 
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
-  internal-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in {
   imports = [
       ../.
diff --git a/makefu/2configs/deployment/mycube.connector.one.nix b/makefu/2configs/deployment/mycube.connector.one.nix
index 125b3dfff..8f51c91dd 100644
--- a/makefu/2configs/deployment/mycube.connector.one.nix
+++ b/makefu/2configs/deployment/mycube.connector.one.nix
@@ -3,7 +3,7 @@
 with config.krebs.lib;
 let
   hostname = config.krebs.build.host.name;
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
   wsgi-sock = "${config.services.uwsgi.runDir}/uwsgi.sock";
 in {
   services.redis.enable = true;
diff --git a/makefu/2configs/iodined.nix b/makefu/2configs/iodined.nix
index 2e69d167c..d57c91ce8 100644
--- a/makefu/2configs/iodined.nix
+++ b/makefu/2configs/iodined.nix
@@ -10,7 +10,7 @@ in {
     enable = true;
     domain = domain;
     ip = "172.16.10.1/24";
-    extraConfig = "-P ${pw} -l ${pkgs.lib.head config.krebs.build.host.nets.internet.addrs4}";
+    extraConfig = "-P ${pw} -l ${config.krebs.build.host.nets.internet.ip4.addr}";
   };
 
 }
diff --git a/makefu/2configs/nginx/euer.blog.nix b/makefu/2configs/nginx/euer.blog.nix
index 9d08f4b9a..137c0b0e3 100644
--- a/makefu/2configs/nginx/euer.blog.nix
+++ b/makefu/2configs/nginx/euer.blog.nix
@@ -8,8 +8,8 @@ let
   hostname = config.krebs.build.host.name;
   user = config.services.nginx.user;
   group = config.services.nginx.group;
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
-  internal-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
   base-dir = "/var/www/blog.euer";
 in {
   # Prepare Blog directory
diff --git a/makefu/2configs/nginx/euer.test.nix b/makefu/2configs/nginx/euer.test.nix
index f7214e613..84b9bacda 100644
--- a/makefu/2configs/nginx/euer.test.nix
+++ b/makefu/2configs/nginx/euer.test.nix
@@ -5,8 +5,8 @@ let
   hostname = config.krebs.build.host.name;
   user = config.services.nginx.user;
   group = config.services.nginx.group;
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
-  internal-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in {
   krebs.nginx = {
     enable = mkDefault true;
diff --git a/makefu/2configs/nginx/euer.wiki.nix b/makefu/2configs/nginx/euer.wiki.nix
index a5572a519..10985c833 100644
--- a/makefu/2configs/nginx/euer.wiki.nix
+++ b/makefu/2configs/nginx/euer.wiki.nix
@@ -18,8 +18,8 @@ let
   #  user1 = pass1
   #  userN = passN
   tw-pass-file = "${sec}/tw-pass.ini";
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
-  internal-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in {
   services.phpfpm = {
     # phpfpm does not have an enable option
diff --git a/makefu/2configs/nginx/update.connector.one.nix b/makefu/2configs/nginx/update.connector.one.nix
index ac5e6b17b..dde3e3a64 100644
--- a/makefu/2configs/nginx/update.connector.one.nix
+++ b/makefu/2configs/nginx/update.connector.one.nix
@@ -3,7 +3,7 @@
 with config.krebs.lib;
 let
   hostname = config.krebs.build.host.name;
-  external-ip = head config.krebs.build.host.nets.internet.addrs4;
+  external-ip = config.krebs.build.host.nets.internet.ip4.addr;
 in {
   krebs.nginx = {
     enable = mkDefault true;
diff --git a/makefu/2configs/omo-share.nix b/makefu/2configs/omo-share.nix
index 3a4dd456f..c943e3d9a 100644
--- a/makefu/2configs/omo-share.nix
+++ b/makefu/2configs/omo-share.nix
@@ -5,7 +5,7 @@ let
   hostname = config.krebs.build.host.name;
   # TODO local-ip from the nets config
   local-ip = "192.168.1.11";
-  # local-ip = head config.krebs.build.host.nets.retiolum.addrs4;
+  # local-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in {
   krebs.nginx = {
     enable = mkDefault true;
diff --git a/shared/1systems/wolf.nix b/shared/1systems/wolf.nix
index f0323dc2f..53334d6f1 100644
--- a/shared/1systems/wolf.nix
+++ b/shared/1systems/wolf.nix
@@ -1,8 +1,8 @@
 { config, lib, pkgs, ... }:
 
 let
-  shack-ip = lib.head config.krebs.build.host.nets.shack.addrs4;
-  internal-ip = lib.head config.krebs.build.host.nets.retiolum.addrs4;
+  shack-ip = config.krebs.build.host.nets.shack.ip4.addr;
+  internal-ip = config.krebs.build.host.nets.retiolum.ip4.addr;
 in
 {
   imports = [
diff --git a/tv/1systems/doppelbock.nix b/tv/1systems/doppelbock.nix
index 9a8d5b05d..ec85a7772 100644
--- a/tv/1systems/doppelbock.nix
+++ b/tv/1systems/doppelbock.nix
@@ -13,8 +13,8 @@ with config.krebs.lib;
   networking = {
     interfaces.enp2s1.ip4 = singleton {
       address = let
-        addr4 = "45.62.237.203";
-      in assert config.krebs.build.host.nets.internet.addrs4 == [addr4]; addr4;
+        addr = "45.62.237.203";
+      in assert config.krebs.build.host.nets.internet.ip4.addr == addr; addr;
       prefixLength = 24;
     };
     defaultGateway = "45.62.237.1";
diff --git a/tv/1systems/mkdir.nix b/tv/1systems/mkdir.nix
index 58a8fdcb2..f46ed9547 100644
--- a/tv/1systems/mkdir.nix
+++ b/tv/1systems/mkdir.nix
@@ -7,12 +7,7 @@ let
   getDefaultGateway = ip:
     concatStringsSep "." (take 3 (splitString "." ip) ++ ["1"]);
 
-
-  primary-addr4 =
-    builtins.elemAt config.krebs.build.host.nets.internet.addrs4 0;
-
-  #secondary-addr4 =
-  #  builtins.elemAt config.krebs.build.host.nets.internet.addrs4 1;
+  primary-addr4 = config.krebs.build.host.nets.internet.ip4.addr;
 in
 
 {
@@ -55,10 +50,6 @@ in
       address = primary-addr4;
       prefixLength = 24;
     }
-    #{
-    #  address = secondary-addr4;
-    #  prefixLength = 24;
-    #}
   ];
 
   # TODO define gateway in krebs/3modules/default.nix
diff --git a/tv/1systems/rmdir.nix b/tv/1systems/rmdir.nix
index c54caa649..25fae2c36 100644
--- a/tv/1systems/rmdir.nix
+++ b/tv/1systems/rmdir.nix
@@ -7,12 +7,7 @@ let
   getDefaultGateway = ip:
     concatStringsSep "." (take 3 (splitString "." ip) ++ ["1"]);
 
-
-  primary-addr4 =
-    builtins.elemAt config.krebs.build.host.nets.internet.addrs4 0;
-
-  #secondary-addr4 =
-  #  builtins.elemAt config.krebs.build.host.nets.internet.addrs4 1;
+  primary-addr4 = config.krebs.build.host.nets.internet.ip4.addr;
 in
 
 {
diff --git a/tv/2configs/exim-smarthost.nix b/tv/2configs/exim-smarthost.nix
index 280d8572b..8a90639b6 100644
--- a/tv/2configs/exim-smarthost.nix
+++ b/tv/2configs/exim-smarthost.nix
@@ -13,7 +13,7 @@ with config.krebs.lib;
       "shackspace.de"
       "viljetic.de"
     ];
-    relay_from_hosts = concatMap (host: host.nets.retiolum.addrs4) [
+    relay_from_hosts = concatMap (host: host.nets.retiolum.ip4.addr) [
       config.krebs.hosts.nomic
       config.krebs.hosts.wu
       config.krebs.hosts.xu
diff --git a/tv/3modules/charybdis/config.nix b/tv/3modules/charybdis/config.nix
index e4d754ff3..1b160926c 100644
--- a/tv/3modules/charybdis/config.nix
+++ b/tv/3modules/charybdis/config.nix
@@ -56,9 +56,9 @@ in toFile "charybdis.conf" ''
     /* On multi-homed hosts you may need the following. These define
      * the addresses we connect from to other servers. */
     /* for IPv4 */
-    vhost = ${concatMapStringsSep ", " toJSON config.krebs.build.host.nets.retiolum.addrs4};
+    vhost = ${toJSON config.krebs.build.host.nets.retiolum.ip4.addr};
     /* for IPv6 */
-    vhost6 = ${concatMapStringsSep ", " toJSON config.krebs.build.host.nets.retiolum.addrs6};
+    vhost6 = ${toJSON config.krebs.build.host.nets.retiolum.ip6.addr};
 
     /* ssl_private_key: our ssl private key */
     ssl_private_key = ${toJSON cfg.ssl_private_key.path};
@@ -160,10 +160,7 @@ in toFile "charybdis.conf" ''
     /* If you want to listen on a specific IP only, specify host.
      * host definitions apply only to the following port line.
      */
-    # XXX This is stupid because only one host is allowed[?]
-    #host = ''${concatMapStringsSep ", " toJSON (
-    #  config.krebs.build.host.nets.retiolum.addrs
-    #)};
+    #host = ${toJSON config.krebs.build.host.nets.retiolum.ip4.addr};
     port = ${toString cfg.port};
     sslport = ${toString cfg.sslport};
   };