diff --git a/OMADA_respondd.yaml.example b/OMADA_respondd.yaml.example
index 7dc2563..ef61428 100644
--- a/OMADA_respondd.yaml.example
+++ b/OMADA_respondd.yaml.example
@@ -28,3 +28,4 @@ logging_config:
       - console
       level: DEBUG
     version: 1
+fallback_domain: "omada_respondd_fallback" # optional
diff --git a/omada_respondd/config.py b/omada_respondd/config.py
index 102985e..6736b49 100644
--- a/omada_respondd/config.py
+++ b/omada_respondd/config.py
@@ -71,6 +71,7 @@ def from_dict(cls, cfg: Dict[str, str]) -> "Config":
             unicast_port=cfg["unicast_port"],
             interface=cfg["interface"],
             verbose=cfg["verbose"],
+            fallback_domain=cfg.get("fallback_domain", "omada_respondd_fallback"),
         )
 
 
diff --git a/omada_respondd/omada_client.py b/omada_respondd/omada_client.py
index cf805be..67bfe4d 100644
--- a/omada_respondd/omada_client.py
+++ b/omada_respondd/omada_client.py
@@ -285,9 +285,7 @@ def get_infos():
                             gateway6=offloader.get("gateway6", None),
                             gateway_nexthop=offloader_id,
                             neighbour_macs=neighbour_macs,
-                            domain_code=offloader.get(
-                                "domain", "ffmuc_omada_respondd_fallback"
-                            ),
+                            domain_code=offloader.get("domain", cfg.fallback_domain),
                             # autoupdater=autoupgrade,
                         )
                     )