diff --git a/tests/daemon/face/dummy-transport.hpp b/tests/daemon/face/dummy-transport.hpp
index df8fa54..c5c5268 100644
--- a/tests/daemon/face/dummy-transport.hpp
+++ b/tests/daemon/face/dummy-transport.hpp
@@ -51,6 +51,7 @@
     this->setScope(scope);
     this->setPersistency(persistency);
     this->setLinkType(linkType);
+    this->setMtu(MTU_UNLIMITED);
   }
 
   void