PI18153: UDP PORT RESERVATIONS NOT HONORED WHEN EPHEMERAL PORTS ASSIGNED 14/05/19 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Assignment of ephemeral ports for UDP sockets is not honoring
  the port reservations statements in the TCPIP profile.  Ports
  reserved in the TCPIP profile should not be assigned to
  applications binding to port 0.
  .
  ADDITIONAL SYMPTOMS:
  BPXF219I A SOCKETS PORT ASSIGNMENT CONFLICT EXISTS BETWEEN UNIX
  SYSTEM SERVICES AND TCPIP
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release 13 with UI15524   *
  *                 applied                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Port reservations for UDP ports are     *
  *                      not honored when assigning ephemeral    *
  *                      ports.                                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A port reservation exists for a UDP port.  When searching for
  a free UDP port, the list of port reservations is not correctly
  searched.  A reserved port can be assigned as an ephemeral
  port.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

• EZBUDWTE is updated to correctly search the port reservations
  for UDP ports.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

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

  UI18700

Modules/Macros

• EZBUDWTE
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1D0 PSY UI18700

     UP14/07/18 P F407

Fix is available

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