diff --git a/nixos/modules/services/networking/bird-lg.nix b/nixos/modules/services/networking/bird-lg.nix
index 8ef14c93a2ea..dc861dbfd11b 100644
--- a/nixos/modules/services/networking/bird-lg.nix
+++ b/nixos/modules/services/networking/bird-lg.nix
@@ -33,6 +33,7 @@ let
     "--bird" = px.birdSocket;
     "--listen" = px.listenAddress;
     "--traceroute_bin" = px.traceroute.binary;
+    "--traceroute_flags" = concatStringsSep " " px.traceroute.flags;
     "--traceroute_raw" = px.traceroute.rawOutput;
   };
 
@@ -216,6 +217,12 @@ in
             description = lib.mdDoc "Traceroute's binary path.";
           };
 
+          flags = mkOption {
+            type = with types; listOf str;
+            default = [ ];
+            description = lib.mdDoc "Flags for traceroute process";
+          };
+
           rawOutput = mkOption {
             type = types.bool;
             default = false;