diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupHandler.java
index f42b073..8774154 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupHandler.java
@@ -86,6 +86,7 @@
 import java.util.Dictionary;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -379,6 +380,16 @@
             return;
         }
 
+        // in case a port is bound to multiple security groups, we do NOT remove
+        // egress rules unless all security groups bound to the port to be removed
+        Port osPort = osNetService.port(instPort.portId());
+        if (!install && osPort != null && sgRule.getDirection().equalsIgnoreCase(EGRESS)) {
+            List<String> sgIds = osPort.getSecurityGroups();
+            if (!sgIds.contains(sgRule.getSecurityGroupId()) && !sgIds.isEmpty()) {
+                return;
+            }
+        }
+
         // XXX All egress traffic needs to go through connection tracking module,
         // which might hurt its performance.
         ExtensionTreatment ctTreatment =