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Linux client: warning, got duplicate tcp line

5 messages in this thread

list Dominique Frise · Mon, 01 May 2006 08:22:54 +0200 · 
Hi,

One of our Linux RHEL4 client has hobbitclient.log filled with:
...
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
warning, got duplicate tcp line.
...

Other systems with same config. and binaries do not complain.

I tried to attach the client data (msg.txt) but this is to big:
ezmlm-reject: fatal: Sorry, I don't accept messages larger than 30000 bytes 
(#5.2.3)


How to debug this?


Dominique
UNIL - University of Lausanne
list Henrik Størner · Mon, 1 May 2006 09:15:12 +0200 ·
▸ quoted from Dominique Frise
On Mon, May 01, 2006 at 08:22:54AM +0200, Dominique Frise wrote:
Hi,

One of our Linux RHEL4 client has hobbitclient.log filled with:
...
warning, got duplicate tcp line.
Odd, I cannot find that error message anywhere in the Hobbit client
code.

How to debug this?
Try running the commands in the ~hobbit/client/bin/hobbitclient-linux.sh
script by hand; it has to be one of those that generate this error.


Henrik
list Dominique Frise · Mon, 01 May 2006 09:27:46 +0200 ·
▸ quoted from Henrik Størner
Henrik Stoerner wrote:
On Mon, May 01, 2006 at 08:22:54AM +0200, Dominique Frise wrote:

Hi,

One of our Linux RHEL4 client has hobbitclient.log filled with:
...
warning, got duplicate tcp line.

Odd, I cannot find that error message anywhere in the Hobbit client
code.


How to debug this?

Try running the commands in the ~hobbit/client/bin/hobbitclient-linux.sh
script by hand; it has to be one of those that generate this error.


Henrik


$netstat -ant
...
...
tcp        0      0 130.223.27.74:993           130.223.131.51:49158 ESTABLISHED
warning, got duplicate tcp line.
warning, got duplicate tcp line.
tcp        0      0 130.223.27.74:993           130.223.131.51:49159 ESTABLISHED


Thanks Henrik :-)

I'll try to find out what this error from netstat means.


Dominique
UNIL - University of Lausanne
list Tom Georgoulias · Mon, 01 May 2006 09:51:03 -0400 ·
▸ quoted from Dominique Frise
Dominique Frise wrote:

One of our Linux RHEL4 client has hobbitclient.log filled with:
...
warning, got duplicate tcp line.
$netstat -ant
...
...
tcp        0      0 130.223.27.74:993           130.223.131.51:49158 
ESTABLISHED
warning, got duplicate tcp line.
warning, got duplicate tcp line.
tcp        0      0 130.223.27.74:993           130.223.131.51:49159 
ESTABLISHED

I'll try to find out what this error from netstat means.
This may/may not help:

http://kbase.redhat.com/faq/FAQ_80_6180.shtm
list Dominique Frise · Mon, 01 May 2006 16:45:37 +0200 ·
▸ quoted from Tom Georgoulias
Tom Georgoulias wrote:
Dominique Frise wrote:

One of our Linux RHEL4 client has hobbitclient.log filled with:
...
warning, got duplicate tcp line.
$netstat -ant
...
...
tcp        0      0 130.223.27.74:993           130.223.131.51:49158 ESTABLISHED
warning, got duplicate tcp line.
warning, got duplicate tcp line.
tcp        0      0 130.223.27.74:993           130.223.131.51:49159 ESTABLISHED

I'll try to find out what this error from netstat means.

This may/may not help:

http://kbase.redhat.com/faq/FAQ_80_6180.shtm


Thanks for the info but the host generating these errors has neither sysctl net.ipv4.tcp_tw_reuse nor sysctl net.ipv4.tcp_tw_recycle set.

Redhat seems to be willing to correct this sometimes...(Work is underway at the moment to suppress these messages in further releases of Red Hat Enterprise Linux but is not a high priority because of the messages benign nature)

In the meantime I patched the netstat -ant for this particuliar client (hobbitclient-linux.sh):

echo "[ports]"
netstat -ant 2> /dev/null


Dominique
UNIL - University of Lausanne