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PH68736: AFTER APPLYING APAR PH63454/UI98908 NEW MESSAGE DFHWB1583 IS ISSUED CONTAINING GARBAGE FOR THE NEW IP ADDRESS.

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APAR status

  • Closed as program error.

Error description

  • Migrating from CICS v5.6 to 6.1 and now see message DFHWB1583
being issued with garbage for the
new IP address. This happens when the WEB CONVERSE fails
during the SEND due to network problems.
The message looks like so:
.
+DFHWB1583I REGNNAME

THE IP ADDRESS FOR HOST whatever.host.name.is HAS CHANGED. THE
OLD IP ADDRESS WAS: 12.123.456.78. THE NEW IP ADDRESS IS:




.
Message DFHWB1583 was introduced by APAR PH63454/UI98908.

Local fix

  • You can stop the message from being issued by disabling the DNS
cache by setting feature toggle
"com.ibm.cics.web.dnscache=false". True is the default value.

Keywords: KIXREVQWD

Problem summary

  • ****************************************************************
* USERS AFFECTED: All CICS Users.                              *
****************************************************************
* PROBLEM DESCRIPTION: Message DFHWB1583 may contain corrupted *
*                      data in the New IP Address field.       *
****************************************************************
Message DFHWB1583, which was added by APAR PH63454, is issued
to document when a DNS lookup detects that the IP address has
changed from the one that was being currently used, but it may
contain corrupted data in the New IP Address field. This
message corruption will only occur when the connection fails.

Problem conclusion

  • CICS has been changed to ensure that the NEW IP ADDRESS is
correctly picked up and set in message DFHWB1583.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PH68736
    • 

  • Reported component name
    CICS TS Z/OS V6
    • 

  • Reported component ID
    5655YA100
    • 

  • Reported release
    600
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2025-10-29
    • 

  • Closed date
    2025-11-24
    • 

  • Last modified date
    2025-11-30
    • 





    

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

    
PH66288
    

    • 

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

    
UO05931
    

    • 



Modules/Macros


    

  • DFHWBCL

    



Fix information


    

  • Fixed component name
    CICS TS Z/OS V6
    • 

  • Fixed component ID
    5655YA100
    • 



Applicable component levels


    

  • R600  PSY  UO05931
       UP25/11/29  P  F511
    • 



Fix is available


    

  • Select the PTF appropriate for your component level.
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              [{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.3","Line of Business":{"code":"LOB70","label":"Z TPS"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            30 November 2025
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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