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IV14728: MARTIAN PACKET WITH LOOPBACK SOURCE ADDRESS NOT DROPPED APPLIES TO AIX 7100-00

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APAR status

  • Closed as program error.

Error description

  • Martian packets with the loopback (127.0.0.1) address are
received on interfaces other than lo0 and processed
instead
of discarded.

Local fix

  • Disable checksum offload.

Problem summary

  • martian packet check is bypassed when checksum offload is
enabled. This might cause denial of service or evesdrop.
Though driver should drop this kind of packets. But with
particula HEA adapter with promiscous mode enabled will
just forward such packets to ip layer without any check

Problem conclusion

  • Move martian packet check before the checksum offload check.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV14728
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2012-02-02
    • 

  • Closed date
    2012-02-02
    • 

  • Last modified date
    2013-02-27
    • 





    

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

    
IV07315
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY  U846526
       UP12/03/30  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            27 February 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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