add qemu bridge configuration

flake.nix

@@ -30,6 +30,7 @@
           ./backup-target.nix
 
 	      ./users/shatteredmint.nix
+          ./qemu-bridges.nix
 	];
       };
 

qemu-bridges.nix

@@ -0,0 +1,12 @@
+{ config, libs, pkgs, ... }:
+{
+    networking.bridges.virtbr0.interfaces = [
+        "enp4s0"
+    ];
+
+    networking.interfaces.virtbr0 = {
+        useDHCP = true;
+    };
+
+    virtualisation.libvirtd.allowedBridges = [ "virtbr0" ];
+}