diff --git a/hosts/containers/freifunk/assets/sysinfo-json.cgi b/hosts/containers/freifunk/assets/sysinfo-json.cgi
deleted file mode 100644
index 92dff0ae..00000000
--- a/hosts/containers/freifunk/assets/sysinfo-json.cgi
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "version": "15",
-  "timestamp": "1586882346",
-  "data": {
-    "firmware": {
-      "version": "0.0.0",
-      "DISTRIB_ID": "NixOS",
-      "DISTRIB_RELEASE": "20.03",
-      "DISTRIB_REVISION": "",
-      "DISTRIB_CODENAME": "",
-      "DISTRIB_TARGET": "x86_64",
-      "DISTRIB_DESCRIPTION": "NixOS 20.03"
-    },
-    "system": {
-      "uptime": "0 0",
-      "uname": "Linux 5.3.18",
-      "nameserver": [
-      ],
-      "date": "Tue Apr 14 18:39:06 CEST 2020",
-      "cpuinfo": "Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz",
-      "cpucount": "40",
-      "bmxd": "bmxd",
-      "essid": "ZW public",
-      "node_type": "router",
-      "splash": 0,
-      "email_notification": 0,
-      "autoupdate": 0,
-      "available_flash_size": "16T",
-      "bmxd_restart_counter": 0
-    },
-    "common": {
-      "city": "Dresden",
-      "node": "51073",
-      "domain": "freifunk-dresden.de",
-      "ip": "10.200.200.74",
-      "network_id": "1206"
-    },
-    "gps": {
-      "latitude": 51.0810624,
-      "longitude": 13.7285866,
-      "altitude": 100
-    },
-    "contact": {
-      "name": "C3D2",
-      "location": "Zentralwerk Haus B Souterrain",
-      "email": "astro%40spaceboyz.net",
-      "note": ""
-    }
-  }
-}
diff --git a/hosts/containers/freifunk/configuration.nix b/hosts/containers/freifunk/configuration.nix
index 2f14142a..478ef0c5 100644
--- a/hosts/containers/freifunk/configuration.nix
+++ b/hosts/containers/freifunk/configuration.nix
@@ -11,6 +11,10 @@ let
   ddmeshNode = 51073;
   ddmeshAddrPart = "200.74";
   rt_table = 7;
+  bmxd = import (toString <lib/pkgs/bmxd.nix>) { inherit pkgs; };
+  sysinfo-json = import <this-host/sysinfo-json.nix> {
+    inherit pkgs bmxd ddmeshNode;
+  };
 in {
   imports = [
     <nixpkgs/nixos/modules/profiles/minimal.nix>
@@ -113,10 +117,7 @@ in {
       };
     };
   };
-  systemd.services.bmxd =
-    let
-      bmxd = import (toString <lib/pkgs/bmxd.nix>) { inherit pkgs; };
-    in {
+  systemd.services.bmxd = {
       after = [ "systemd-networkd.service" ];
       wantedBy = [ "network.target" ];
       serviceConfig = {
@@ -148,6 +149,17 @@ in {
     wantedBy    = [ "timers.target" ];
     timerConfig.OnCalendar = "daily";
   };
+  systemd.services.sysinfo-json = {
+    script = ''
+      ${sysinfo-json}/bin/bmxddump.sh
+      ${sysinfo-json}/bin/sysinfo-json.cgi > /tmp/sysinfo.json
+    '';
+  };
+  systemd.timers.sysinfo-json = {
+    partOf      = [ "sysinfo-json.service" ];
+    wantedBy    = [ "timers.target" ];
+    timerConfig.OnCalendar = "minutely";
+  };
 
   services.bird2 = {
     enable = true;
@@ -202,47 +214,53 @@ in {
     recommendedOptimisation = true;
     recommendedGzipSettings = true;
 
-    virtualHosts =
-      let
-        aliasFile = path: {
-          alias = path;
-          extraConfig = ''
-            etag off;
-            add_header etag "\"${builtins.substring 11 32 path}\"";
-          '';
-        };
-      in {
-        "c3d2.ffdd" = {
-          default = true;
-          root = <this-host/assets>;
-          locations = {
-            "/".index = "index.html";
-            "/sysinfo-json.cgi".extraConfig = ''
+    virtualHosts = {
+      "c3d2.ffdd" = {
+        default = true;
+        root = <this-host/assets>;
+        locations = {
+          "/" = {
+            index = "index.html";
+            extraConfig = ''
+              etag off;
+              add_header etag "\"${builtins.substring 11 32 (<this-host> + "/assets")}\"";
+            '';
+          };
+          "=/sysinfo-json.cgi" = {
+            alias = "/tmp/sysinfo.json";
+            extraConfig = ''
+              add_header Content-Type "application/json;charset=UTF-8";
+            '';
+          };
+          "=/sysinfo.json" = {
+            alias = "/tmp/sysinfo.json";
+            extraConfig = ''
               add_header Content-Type "application/json;charset=UTF-8";
             '';
           };
         };
-        "storage.hq.c3d2.ffdd" = {
-          locations = {
-            "/".proxyPass = "http://storage.hq.c3d2.de/";
-          };
+      };
+      "storage.hq.c3d2.ffdd" = {
+        locations = {
+          "/".proxyPass = "http://storage.hq.c3d2.de/";
         };
-        "grafana.hq.c3d2.ffdd" = {
-          locations = {
-            "/" = {
-              proxyPass = "https://grafana.hq.c3d2.de/";
-              extraConfig = ''
+      };
+      "grafana.hq.c3d2.ffdd" = {
+        locations = {
+          "/" = {
+            proxyPass = "https://grafana.hq.c3d2.de/";
+            extraConfig = ''
                 proxy_ssl_server_name on;
               '';
-            };
-          };
-        };
-        "influxdb.hq.c3d2.ffdd" = {
-          locations = {
-            "/".proxyPass = "http://grafana.hq.c3d2.de:8086/";
           };
         };
       };
+      "influxdb.hq.c3d2.ffdd" = {
+        locations = {
+          "/".proxyPass = "http://grafana.hq.c3d2.de:8086/";
+        };
+      };
+    };
   };
 
   # This value determines the NixOS release with which your system is to be
diff --git a/hosts/containers/freifunk/sysinfo-json.nix b/hosts/containers/freifunk/sysinfo-json.nix
new file mode 100644
index 00000000..3aafe3c2
--- /dev/null
+++ b/hosts/containers/freifunk/sysinfo-json.nix
@@ -0,0 +1,70 @@
+{ pkgs ? import <nixpkgs> {},
+  ffdd-server ? builtins.fetchGit "https://github.com/Freifunk-Dresden/ffdd-server.git",
+  bmxd,
+  ddmeshNode,
+  ... }:
+
+with pkgs;
+let
+  nvram = {
+    ddmesh_node = toString ddmeshNode;
+    city = "Dresden";
+    autoupdate = "0";
+    contact_name = "C3D2";
+    contact_location = "Zentralwerk";
+    contact_email = "astro@spaceboyz.net";
+    contact_note = "http://www.c3d2.ffdd/";
+    gps_latitude = "51.0810624";
+    gps_longitude = "13.7285866";
+    gps_altitude = "100";
+  };
+in
+stdenv.mkDerivation {
+  name = "sysinfo-json";
+  src = "${ffdd-server}/salt/freifunk/base/ddmesh/";
+  buildPhase = ''
+    cat > bmxddump.sh <<EOF
+    #!${bash}/bin/bash
+
+    DB_PATH=/var/lib/freifunk/bmxd
+    mkdir -p \$DB_PATH
+    ${bmxd}/sbin/bmxd -c --gateways > \$DB_PATH/gateways
+    ${bmxd}/sbin/bmxd -c --links > \$DB_PATH/links
+    ${bmxd}/sbin/bmxd -c --originators > \$DB_PATH/originators
+    ${bmxd}/sbin/bmxd -c --status > \$DB_PATH/status
+    #${bmxd}/sbin/bmxd -c --networks > \$DB_PATH/networks
+    ${bmxd}/sbin/bmxd -ci > \$DB_PATH/info
+    EOF
+
+    cat > lsb_release <<EOF
+    #!${bash}/bin/bash
+
+    ${lsb-release}/bin/lsb_release \$@ | \
+      ${gnused}/bin/sed -e 's/"//g'
+    EOF
+
+    substitute usr/local/bin/ddmesh-ipcalc.sh ddmesh-ipcalc.sh \
+      --replace awk ${gawk}/bin/awk
+    substitute var/www_freifunk/sysinfo-json.cgi sysinfo-json.cgi \
+      --replace "echo 'Content-Type: application/json;charset=UTF-8'" "" \
+      --replace '"node_type":"server"' '"node_type":"node"' \
+      --replace ddmesh-ipcalc.sh $out/bin/ddmesh-ipcalc.sh \
+      --replace lsb_release $out/bin/lsb_release \
+      --replace ${lib.strings.escapeShellArg "$(sudo /sbin/iptables -w -xvn -L stat_from_ovpn | awk '/RETURN/{print $2}')"} 0 \
+      --replace ${lib.strings.escapeShellArg "$(sudo /sbin/iptables -w -xvn -L stat_to_ovpn | awk '/RETURN/{print $2}')"} 0 \
+      --replace 'nettype_lookup[$2]' '"lan"' \
+      --replace awk ${gawk}/bin/awk
+  '' +
+  lib.strings.concatStrings (lib.attrsets.mapAttrsToList (
+    var: value: "substituteInPlace sysinfo-json.cgi --replace ${lib.strings.escapeShellArg "$(nvram get ${var})"} '${value}'\n"
+  ) nvram);
+  installPhase = ''
+    pwd
+    mkdir -p $out/bin
+    ls -la
+    install -m 0755 sysinfo-json.cgi $out/bin/
+    install -m 0755 ddmesh-ipcalc.sh $out/bin/
+    install -m 0755 bmxddump.sh $out/bin/
+    install -m 0755 lsb_release $out/bin/
+  '';
+}