diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index e46333e..2bf6272 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -262,15 +262,15 @@ in
     interfaces.intl0 = {
       ipv4.addresses = [
         {
-          address = "5.78.16.0";
-          prefixLength = 32;
+          address = "10.47.3.2";
+          prefixLength = 30;
         }
       ];
       ipv4.routes = [
         {
           address = "0.0.0.0";
           prefixLength = 0;
-          via = "5.78.16.0";
+          via = "10.47.3.0";
           options.table = "3";
         }
       ];
@@ -397,7 +397,7 @@ in
     serviceConfig = {
       Type = "oneshot";
       RemainAfterExit = true;
-      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 5.78.16.0/32 table 3";
+      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 10.47.3.0/30 table 3";
       ExecStop = "${pkgs.iproute2}/bin/ip rule del table 3";
     };
   };
@@ -1329,7 +1329,7 @@ in
       masterConfig.smtptun = {
         type = "smtp";
         command = "smtp";
-        args = "-o smtp_bind_address=10.42.0.2";
+        args = "-o smtp_bind_address=10.47.3.2";
       };
     };
   };