diff --git a/.gitignore b/.gitignore
index c08b796..8aeb155 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 collections
 facts.d
+inventory_cache
diff --git a/ansible.cfg b/ansible.cfg
index 58722fc..8e6cc62 100644
--- a/ansible.cfg
+++ b/ansible.cfg
@@ -1,7 +1,7 @@
 [defaults]
-inventory               = hosts
+inventory               = inventory
 roles_path              = roles
-collections_path        = /etc/ansible/collections
+collections_path        = collections
 remote_tmp              = /tmp/.ansible-${USER}/tmp
 gathering               = smart
 gather_timeout          = 300
@@ -25,3 +25,11 @@ strategy                = free
 pipelining = True
 ssh_args = -o ControlMaster=auto -o ControlPersist=60s -o PreferredAuthentications=publickey
 
+
+#[inventory]
+#cache = True
+#cache_plugin = ansible.builtin.jsonfile
+#cache_connection = inventory_cache
+#cache_timeout = 300
+#cache_prefix = ansible_nmap_inventory_
+
diff --git a/hosts b/hosts
deleted file mode 100644
index 369a815..0000000
--- a/hosts
+++ /dev/null
@@ -1,26 +0,0 @@
-[dev]
-lab-dev-1  ansible_host=10.10.42.235
-lab-dev-2  ansible_host=10.10.42.203
-lab-dev-3  ansible_host=10.10.42.218
-lab-dev-4  ansible_host=10.10.42.240
-lab-dev-5  ansible_host=10.10.42.208
-lab-dev-6  ansible_host=10.10.42.213
-lab-dev-7  ansible_host=10.10.42.202
-lab-dev-8  ansible_host=10.10.42.220
-lab-dev-9  ansible_host=10.10.42.239
-lab-dev-10  ansible_host=10.10.42.246
-lab-dev-11  ansible_host=10.10.42.244
-lab-dev-12  ansible_host=10.10.42.145
-lab-dev-13  ansible_host=10.10.42.147
-lab-dev-14  ansible_host=10.10.42.157
-lab-dev-15  ansible_host=10.10.42.177
-lab-dev-16  ansible_host=10.10.42.133
-lab-dev-17  ansible_host=10.10.42.179
-lab-dev-18  ansible_host=10.10.42.165
-lab-dev-19  ansible_host=10.10.42.188  ansible_user=broken
-lab-dev-20  ansible_host=10.10.42.142
-
-
-[dev:vars]
-ansible_user=root
-
diff --git a/inventory/10nmap_inventory.yml b/inventory/10nmap_inventory.yml
new file mode 100644
index 0000000..51aed89
--- /dev/null
+++ b/inventory/10nmap_inventory.yml
@@ -0,0 +1,21 @@
+---
+plugin: community.general.nmap
+address: 10.10.42.0/24
+strict: False
+ipv4: yes
+ports: no
+
+cache: yes
+cache_plugin: ansible.builtin.jsonfile
+cache_connection: inventory_cache
+cache_timeout: 300
+cache_prefix: ansible_nmap_inventory_
+
+
+groups:
+  dev_nodes: "'lab-dev' in name"
+  everything_else: "'lab-dev' not in name"
+  ip_only: "'10.10.42' in name"
+
+
+...