diff --git a/commons/zenoh-protocol/src/transport/close.rs b/commons/zenoh-protocol/src/transport/close.rs
index b93fe6d6b6..e4029f09d6 100644
--- a/commons/zenoh-protocol/src/transport/close.rs
+++ b/commons/zenoh-protocol/src/transport/close.rs
@@ -65,6 +65,7 @@ pub mod reason {
     pub const MAX_SESSIONS: u8 = 0x03;
     pub const MAX_LINKS: u8 = 0x04;
     pub const EXPIRED: u8 = 0x05;
+    pub const UNRESPONSIVE: u8 = 0x06;
 }
 
 pub fn reason_to_str(reason: u8) -> &'static str {
@@ -75,6 +76,7 @@ pub fn reason_to_str(reason: u8) -> &'static str {
         reason::MAX_SESSIONS => "MAX_SESSIONS",
         reason::MAX_LINKS => "MAX_LINKS",
         reason::EXPIRED => "EXPIRED",
+        reason::UNRESPONSIVE => "UNRESPONSIVE",
         _ => "UNKNOWN",
     }
 }
diff --git a/io/zenoh-transport/src/unicast/universal/tx.rs b/io/zenoh-transport/src/unicast/universal/tx.rs
index a241ecae61..6f61fc070d 100644
--- a/io/zenoh-transport/src/unicast/universal/tx.rs
+++ b/io/zenoh-transport/src/unicast/universal/tx.rs
@@ -121,7 +121,7 @@ impl TransportUnicastUniversal {
             zenoh_runtime::ZRuntime::RX.spawn({
                 let transport = self.clone();
                 async move {
-                    if let Err(e) = transport.close(close::reason::GENERIC).await {
+                    if let Err(e) = transport.close(close::reason::UNRESPONSIVE).await {
                         tracing::error!(
                             "Error closing transport with {}: {}",
                             transport.config.zid,