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MF60858 - LIC-COMM-TCPIP-SRCB6000325-INCORROUT LACK OF LOOPBACK INTERF

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PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-COMM-TCPIP-SRCB6000325-INCORROUT LACK OF LOOPBACK INTERF


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

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



NOTICE:
-------
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APAR Error Description / Circumvention

-----------------------------------------------
When no *LOOPBACK interface is defined (IPv4 or IPv6), code
responsible for polling the interfaces incorrectly uses an
uninitialized pointer, possibly leading to an overwrite of stack
data. Depending on what data is overlaid in the stack, there may
be no observable symptoms, Function Checks, or even partition
termination.

Service Keywords:
B6000325
Function Check vl02000606 vl02000307 vl02001720
LoPipe

CORRECTION FOR APAR MA45032 :
-----------------------------
An array of pointers was one element too small when no *LOOPBACK
interface was configured, so access beyond the array size used
an uninitialized pointer. The array size is now correct which
will prevent this unpredictable behavior.

CIRCUMVENTION FOR APAR MA45032 :
--------------------------------
Recreate the standard IPv4 loopback interface (e.g. CL command
"ADDTCPIFC INTNETADR('127.0.0.1') LIND(*LOOPBACK)
SUBNETMASK('255.0.0.0')") or start IPv6 (e.g. CL command "STRTCP
STRIP6(*YES)").


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF57179      LIC-COMM-TCPIP Loop and exception in ToIpProxyList
   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 MA45032
Superseded by:......................
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C6120710


System i Support

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Document Information

Modified date:
09 November 2015