IJ35091: IBM JAVA 1.8 ON VIPA ENABLED AIX THROWS SOCKETEXCEPTION

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.RuntimeException:
  java.net.SocketException: IOCTL SIOCGLIFFLAGS
  .
  Stack Trace: Interface: name:vi0 (vi0)
  Exception in thread "main" java.lang.RuntimeException:
  java.net.SocketException: IOCTL SIOCGLIFFLAGS failed
  at ListNets.getLocalAddresses(ListNets.java:55)
  at ListNets.main(ListNets.java:13)
  Caused by: java.net.SocketException: IOCTL SIOCGLIFFLAGS failed
  at java.net.NetworkInterface.isUp0(Native Method)
  at java.net.NetworkInterface.isUp(NetworkInterface.java:416)
  .
  

Local fix

Problem summary

• NetworkInterface.isUp() call fails on AIX when VIPA(Virtual IP
  Address) is enabled
  

Problem conclusion

• The logic check in the NetworkInterface.c is modified to
  correctly handle the VIPA scenario considering the facts:
  1. IOCTL system call returns -1 in case of error/failure.
  2. In case of AIX VIPA the ifr_flgs may have negative values
  like -2080374719.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR7 (8.0.7.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

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:

Fix information

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R800 PSY

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