1 files changed, 3 insertions, 1 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/host/impl/HostMonitor.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/host/impl/HostMonitor.java
index 4dc93a51..5fb1dcf1 100644
--- a/framework/src/onos/core/net/src/main/java/org/onosproject/net/host/impl/HostMonitor.java
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/host/impl/HostMonitor.java
@@ -168,7 +168,9 @@ public class HostMonitor implements TimerTask {
             }
         }
 
-        this.timeout = Timer.getTimer().newTimeout(this, probeRate, TimeUnit.MILLISECONDS);
+        synchronized (this) {
+            this.timeout = Timer.getTimer().newTimeout(this, probeRate, TimeUnit.MILLISECONDS);
+        }
     }
 
     /**