diff --git a/pkgs/by-name/if/ifupdown-ng/package.nix b/pkgs/by-name/if/ifupdown-ng/package.nix
new file mode 100644
index 000000000000..b7587026dad5
--- /dev/null
+++ b/pkgs/by-name/if/ifupdown-ng/package.nix
@@ -0,0 +1,75 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  libbsd,
+  pkg-config,
+  coreutils,
+  iproute2,
+}:
+
+stdenv.mkDerivation {
+  pname = "ifupdown-ng";
+  version = "unstable-2025-09-12";
+
+  src = fetchFromGitHub {
+    owner = "ifupdown-ng";
+    repo = "ifupdown-ng";
+    rev = "fb07d0824b20d178e7acca9e85296822ac2539ac";
+    hash = "sha256-c06NbF0LpyK3hTMxCeWyQcUP9dL17hOm3993wjW/OzQ=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ libbsd ];
+
+  postPatch = ''
+    # The Makefile hardcodes -static; remove it to build dynamically.
+    substituteInPlace Makefile \
+      --replace-fail ' -static ' ' '
+
+    # replace _PATH_STDPATH with a path that includes nix store locations.
+    # ifupdown-ng sets PATH to this value before running executor scripts.
+    substituteInPlace libifupdown/lifecycle.c \
+      --replace-fail '_PATH_STDPATH' '"${
+        lib.makeBinPath [
+          iproute2
+          coreutils
+        ]
+      }:/usr/bin:/bin"'
+
+    # remove hardcoded FHS paths from executor scripts so they use PATH lookup.
+    substituteInPlace executors/linux/dhcp \
+      --replace-fail '/sbin/dhcpcd' 'dhcpcd' \
+      --replace-fail '/usr/sbin/dhclient' 'dhclient' \
+      --replace-fail '/sbin/udhcpc' 'udhcpc'
+    substituteInPlace executors/linux/vrf \
+      --replace-fail '/sbin/ip' 'ip'
+    substituteInPlace executors/linux/wifi \
+      --replace-fail '/sbin/wpa_passphrase' 'wpa_passphrase' \
+      --replace-fail '/sbin/wpa_supplicant' 'wpa_supplicant' \
+      --replace-fail '/usr/sbin/iwconfig' 'iwconfig'
+  '';
+
+  makeFlags = [
+    "SBINDIR=/bin"
+    "EXECUTOR_PATH=/libexec/ifupdown-ng"
+  ];
+
+  installFlags = [
+    "DESTDIR=${placeholder "out"}"
+  ];
+
+  meta = {
+    description = "Next-generation network interface configuration tool";
+    longDescription = ''
+      ifupdown-ng is a network device manager that is largely compatible
+      with Debian ifupdown, BusyBox ifupdown, and other implementations.
+      It is used by Alpine Linux as its network management solution.
+    '';
+    homepage = "https://github.com/ifupdown-ng/ifupdown-ng";
+    license = lib.licenses.isc;
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ aanderse ];
+  };
+}