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MF57179 - LIC-COMM-TCPIP Loop and exception in ToIpProxyList

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-COMM-TCPIP Loop and exception in ToIpProxyList


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
NONE



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-------
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APAR Error Description / Circumvention

-----------------------------------------------
All TCP/IP communications stop and numerous VL07000071,
VL2C001496 or other LIC logs are seen showing an exception in
ToIpProxyList::extend().

CORRECTION FOR APAR MA42907 :
-----------------------------
Due to a misconfiguration of TCP/IP proxy ARP on an interface, a
loop was created in an internal structure used to track proxied
interfaces when the interface was ended and then removed and
re-added. The actual misconfiguration was an unsupported proxy
configuration. The TCP/IP proxy ARP code has been corrected to
prevent this misconfiguration from causing the loop and TCP/IP
hang.

CIRCUMVENTION FOR APAR MA42907 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF56653      LIC-COMM-TCPIP Rename of line leaves TCP/IP configuration an
   MF55395      OSP-INCORROUT AN IP INTERFACE IS STARTED INVALID DATA IN A F
   MF51937      LIC-COMM-TCPIP Memory leak on Token Ring lines
   MF51967      LIC-COMM-TCPIP-MSGTCP1B21 TCP/IP VIPA INTERFACE DOES NOT STA
   MF51853      OSP-UNPRED TCP/IP INTERFACE ON A TOKEN RING NETWORK STOPPED
   MF48863      TCPIP-ACT-UNPRED VIPA CONFIGURED PREFERRED INTERFACES ARE AC
   MF49331      LIC-COMM-TCPIP IFF_POINTOPOINT not set for IPv6 addresses
   MF48083      LIC-COMM-TCPIP IPv6 addresses not usable
   MF47858      LIC-COMM-TCPIP VL07000071 in ToIp6ND if DAD disabled for *IP

Summary Information

System..............................i
Models..............................
Release.............................V7R1M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA42907
Superseded by:......................View fix details for PTF MF60858
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C3298710


System i Support

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Document Information

Modified date:
17 June 2013