VM65286: EZZ4343I E005 ENCOUNTERED USING SIMULATED HIPERSOCKETS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• z/OS receives EZZ4343I E005 using simulated hipersockets.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: VSWITCH or Guest LAN users exploiting IPv6   *
  *                 in IP Layer (Layer 3) mode could be affected *
  *                 if they attempt to use VIPA or IP Takeover.  *
  *                 Note that this does NOT affect users         *
  *                 exploiting IPv6 in ETHERNET (Layer 2) mode.  *
  ****************************************************************
  * PROBLEM DESCRIPTION: The VM user was running z/OS in the     *
  *                      guest (a Linux guest would have had the *
  *                      same problem).  The network interface   *
  *                      was configured using a virtual NIC      *
  *                      coupled to a Guest LAN (HiperSockets in *
  *                      this case, but the results would have   *
  *                      been the same for type QDIO).  The      *
  *                      Guest LAN was defined as an IP network  *
  *                      (Layer 3) and the interface was defined *
  *                      for IPv6 with IP Takeover.  When two    *
  *                      conflicting IPv6 addresses were defined *
  *                      in the local (internal) LAN segment,    *
  *                      SETIP failed with error E005 (which was *
  *                      unexpected).  IP Takeover options       *
  *                      should have prevented this error        *
  *                      condition.                              *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  To configure an IP Layer HiperSockets (or OSA Express)
  connection for IP Takeover (or VIPA) the guest device driver
  sets a special flag on the SETIP request.  The original support
  for virtual NIC simulation provides support for these flags to
  control ARP simulation for IPv4 addresses.  It did NOT recognize
  these flags for IPv6 address requests.  Therefore, IPv6 SETIP
  requests were processed as if none of these flags were set.
  

Problem conclusion

• SETIP simulation (found in HCPIPN) is updated to provide support
  for IPv6 address processing.  This addresses the problem for
  HiperSockets as well as QDIO (OSA Express) simulation.  This
  APAR should be applied to allow IP Takeover and VIPA processing
  for IPv6 addresses within a Guest LAN or VSWITCH network.
  

Temporary fix

• FOR RELEASE VM/ESA CP/ESA R620 :
  PREREQ: VM65104
  CO-REQ: NONE
  IF-REQ: NONE
  

Comments

APAR Information

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

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

  UM33976

Modules/Macros

• HCPIPN
  

Fix information

• Fixed component name

  VM CP

• Fixed component ID

  568411202

Applicable component levels

• R620 PSY UM33976

     UP14/09/10 P 1401

• R540 PSN

     UP

• R610 PSN

     UP

Fix is available

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