IBM Support

IV51604: IPREPORT SHOWS BAD PACKETS WITH TCP_FASTLO=1 APPLIES TO AIX 7100-03

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Enabling tcp_fastlo will show tcp/ip packets with a wrong
    packet lenght in iptrace/ipreport.
    These tcp_fastlo packets will have a fake TCP/IP header
    anyway, but due to ip_len=40 we can't see any payload
    bytes
    with ipreport.
    

Local fix

Problem summary

  • When fastlo is enabled, iptrace is unable to capture
    packet pay load
    

Problem conclusion

  • Correct the code to capture packet pay load when fastlo enabled
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV58280
    6100-08 - use AIX APAR IV57911
    6100-09 - use AIX APAR IV51908
    6100-09 - use AIX APAR IV51908
    6100-09 - use AIX APAR IV51908
    7100-01 - use AIX APAR IV45396
    7100-02 - use AIX APAR IV57078
    7100-03 - use AIX APAR IV51604
    

APAR Information

  • APAR number

    IV51604

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2013-11-04

  • Closed date

    2013-11-04

  • Last modified date

    2014-08-14

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

    IV45396

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

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U859722

       UP14/05/22 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV51604

Modified date: 14 August 2014