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IC83825: LOW LEVEL NETWORK DRIVER ISSUE CAN RESULT IN INCREMENTAL GROWTHS IN MEMORY.

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APAR status

  • Closed as program error.

Error description

  • There is a low level network driver issue which will cause
incremental memory growths on the appliance.

Local fix

  • The work-around is to enable IPv6 on all of the appliances
Ethernet interfaces.

Problem summary

  • Customers using firmware releases 3.8.1, 3.8.2, 4.0.1 and 4.0.2
may observe a slow growth in memory used by the appliance.
Firmware releases 5.0.0 and higher are not affected.

This happens if there is IPv6 traffic in one of the networks the
device is connected to and the corresponding interface has no
IPv6 address configured. Additional conditions must be met for
the leak to manifest, for example a packet dump running on the
appliance.

This is a bug in the low-level network stack, causing a small
memory leak whenever a multicast IPv6 is received and IPv6 is
disabled on the appliance.

Problem conclusion

  • The fix will be provided in 3.8.2.14, 4.0.1.12 and 4.0.2.8.

Temporary fix

  • Enable IPv6 on the appliance by assigning an IPv6 address to all
the Ethernet interfaces in use. Setting "Enable IPv6
Autoconfiguration" control to "on"
in Ethernet Interface configuration, Main tab in WebGUI
is the simplest way of doing that.

Comments

  • 



APAR Information




    

  • APAR number
    IC83825
    • 

  • Reported component name
    DATAPOWER
    • 

  • Reported component ID
    DP1234567
    • 

  • Reported release
    381
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-05-30
    • 

  • Closed date
    2012-06-27
    • 

  • Last modified date
    2012-08-23
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    DATAPOWER
    • 

  • Fixed component ID
    DP1234567
    • 



Applicable component levels


    

  • R382  PSN
       UP
    • 

  • R401  PSN
       UP
    • 

  • R402  PSN
       UP
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS9H2Y","label":"IBM DataPower Gateway"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"3.8.1","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            11 February 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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