diff --git a/nixos/lib/vargen/main.go b/nixos/lib/vargen/main.go
index 62ad83c..821b552 100644
--- a/nixos/lib/vargen/main.go
+++ b/nixos/lib/vargen/main.go
@@ -156,6 +156,11 @@ func main() {
 					netip.MustParseAddr("192.168.1.11"),
 					mac("00:0c:15:05:1e:e6"),
 				),
+				mgmt0.newHost(
+					"hass",
+					netip.MustParseAddr("192.168.1.12"),
+					mac("52:54:00:22:db:4d"),
+				),
 				iot0.newHost(
 					"keylight",
 					netip.MustParseAddr("192.168.66.10"),
diff --git a/nixos/lib/vars.json b/nixos/lib/vars.json
index 728011f..11b7849 100644
--- a/nixos/lib/vars.json
+++ b/nixos/lib/vars.json
@@ -117,6 +117,16 @@
 				},
 				"mac": "00:0c:15:05:1e:e6"
 			},
+			{
+				"name": "hass",
+				"ipv4": "192.168.1.12",
+				"ipv6": {
+					"gua": "2600:6c4a:787f:5e00:5054:ff:fe22:db4d",
+					"ula": "fd9e:1a04:f01d:0:5054:ff:fe22:db4d",
+					"lla": "fe80::5054:ff:fe22:db4d"
+				},
+				"mac": "52:54:00:22:db:4d"
+			},
 			{
 				"name": "keylight",
 				"ipv4": "192.168.66.10",
@@ -370,6 +380,16 @@
 						"lla": "fe80::20c:15ff:fe05:1ee6"
 					},
 					"mac": "00:0c:15:05:1e:e6"
+				},
+				{
+					"name": "hass",
+					"ipv4": "192.168.1.12",
+					"ipv6": {
+						"gua": "2600:6c4a:787f:5e00:5054:ff:fe22:db4d",
+						"ula": "fd9e:1a04:f01d:0:5054:ff:fe22:db4d",
+						"lla": "fe80::5054:ff:fe22:db4d"
+					},
+					"mac": "52:54:00:22:db:4d"
 				}
 			]
 		},