DCTARP026I ARPIN: Unknown or Invalid Hardware Address
APAR Identifier ...... PQ67471 Last Changed ........ 02/11/11
DTCARP026I ARPIN: UNKNOWN OR INVALID HARDWARE ADDRESS
Symptom ...... IN IN Status ........... CLOSED PER
Severity ................... 3 Date Closed ......... 02/11/06
Component .......... 5735FAL00 Duplicate of ........
Reported Release ......... 420 Fixed Release ............ 999
Component Name TCP/IP V2 FOR V Special Notice
Current Target Date .. Flags
SCP ...................
Platform ............
Status Detail: SHIPMENT - Packaged solution is available for
shipment.
PE PTF List:
PTF List:
Release 420 : UQ71547 available 02/11/11 (1000 )
Release 430 : UQ71548 available 02/11/11 (1000 )
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
Customer has setup a z/VM system that uses VIPA and MPROUTE for
network routing. This host can connect to only other hosts
that use dynamic routing. Hosts that rely on static gateway
routing cannot connect to the z/VM host.
From tracing the problem with a statically-routed remote host,
it was found that host issued an ARP broadcast for the z/VM
VIPA address, but the z/VM would not respond. A "MORETRACE
ARP" trace showed the request ARP failed with this trace
message:
DTCARP026I ARPIN: Unknown or invalid hardware address
LOCAL FIX:
PROBLEM SUMMARY:
****************************************************************
* USERS AFFECTED: Users with STATIC gateways to z/VM VIPA *
* devices. *
****************************************************************
* PROBLEM DESCRIPTION: Users with STATIC gateway statements *
* to z/VM VIPA addresses are unable to *
* connect to the VIPA addresses. *
****************************************************************
* RECOMMENDATION: APPLY PTF *
****************************************************************
When z/VM TCP/IP receives an ARP query for a VIPA address,
it does not respond. So connections to z/VM VIPA addresses do
not work.
PROBLEM CONCLUSION:
TCP/IP was changed to respond to ARP queries for VIPA addresses.
TEMPORARY FIX:
COMMENTS:
MODULES/MACROS: TCARP TCPIP
SRLS: NONE
RTN CODES:
CIRCUMVENTION:
MESSAGE TO SUBMITTER:
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