DaanHoogland commented on a change in pull request #5194:
URL: https://github.com/apache/cloudstack/pull/5194#discussion_r668595190



##########
File path: 
server/src/main/java/org/apache/cloudstack/vm/UnmanagedVMsManagerImpl.java
##########
@@ -615,10 +615,11 @@ private void 
checkUnmanagedNicAndNetworkForImport(UnmanagedInstanceTO.Nic nic, N
                         !networkBroadcastUri.equals(String.format("vlan://%d", 
nic.getVlan())))) {
             throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, 
String.format("VLAN of network(ID: %s) %s is found different from the VLAN of 
nic(ID: %s) vlan://%d during VM import", network.getUuid(), 
networkBroadcastUri, nic.getNicId(), nic.getVlan()));
         }
+        char pvLanType = nic.getPvlanType() == null ? '\0' : 
nic.getPvlanType().toLowerCase().charAt(0);

Review comment:
       ```suggestion
           String pvLanType = nic.getPvlanType() == null ? "" : new 
String(nic.getPvlanType().toLowerCase().charAt(0));
   ```
   i don't trust placing a null-char in the middle of a string. maybe I should 
google a bit for this, but I'd rather insert a string on %s




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