diff --git a/k8s/core/kube-system-custom/app.yaml b/k8s/core/kube-system-custom/app.yaml
new file mode 100644
index 0000000..68270ad
--- /dev/null
+++ b/k8s/core/kube-system-custom/app.yaml
@@ -0,0 +1,18 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: kube-system-custom
+  namespace: argocd
+spec:
+  project: core
+  destination:
+    namespace: kube-system
+    server: https://kubernetes.default.svc
+  source:
+    repoURL: ssh://git@gt.hexor.cy:30022/ab/homelab.git
+    targetRevision: HEAD
+    path: k8s/core/kube-system-custom
+  syncPolicy:
+    syncOptions:
+      - CreateNamespace=false
+
diff --git a/k8s/core/kube-system-custom/coredns-internal-resolve.yaml b/k8s/core/kube-system-custom/coredns-internal-resolve.yaml
new file mode 100644
index 0000000..7ddb18b
--- /dev/null
+++ b/k8s/core/kube-system-custom/coredns-internal-resolve.yaml
@@ -0,0 +1,25 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  annotations:
+  name: coredns-custom
+  namespace: kube-system
+data:
+  homenet.server: |
+    homenet:53 {
+        errors
+        cache 30
+        forward . 10.0.5.1
+    }
+  khv.server: |
+    khv:53 {
+        errors
+        cache 30
+        forward . 10.0.5.1
+    }
+  tailscale.server: |
+    tail2fe2d.ts.net:53 {
+        errors
+        cache 30
+        forward . 100.100.100.100
+    }
diff --git a/k8s/core/kube-system-custom/kustomization.yaml b/k8s/core/kube-system-custom/kustomization.yaml
new file mode 100644
index 0000000..ecefe24
--- /dev/null
+++ b/k8s/core/kube-system-custom/kustomization.yaml
@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - app.yaml
+  - coredns-internal-resolve.yaml
+