A fix is available
APAR status
Closed as program error.
Error description
IPTRACE incorrectly removes the TAP created by another application. This causes the other application to stop receiving packets or no response. In this case, the problem was seen if iptrace was started and stopped when IBM Load Balancer is run on AIX. When iptrace stops it removes the TAP created by Load balancer and it stops receiving packets delivered to that host. The problem can also been seen if tcpdump and iptrace are run together on the same AIX. 1) Start tcpdump 2) Start iptrace 3) Stop iptrace 4) tcpdump will stop sniffing packets on the host.
Local fix
Run, # iptrace -u several times until iptrace unloaded messages are seen Restart the tcpdump or application (load balancer). Do not use iptrace with tcpdump or load balancer.
Problem summary
tcpdump or any other packet sniffing applications will stop receiving packets, if iptrace is started and stopped.
Problem conclusion
iptrace code is modified to retain any existing filters that were added by other packet sniffing applications.
Temporary fix
Comments
6100-08 - use AIX APAR IV55797 6100-09 - use AIX APAR IV63110 7100-02 - use AIX APAR IV64187 7100-03 - use AIX APAR IV63106
APAR Information
APAR number
IV55797
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-02-24
Closed date
2014-07-28
Last modified date
2016-05-11
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
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U867350
UP15/01/18 I 1000
PTF to Fileset Mapping
U867350 bos.net.tcp.server 6.1.8.18
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Document Information
Modified date:
11 May 2016