[Dxspider-support] R: Port 27554 issues

[hb9dhg at ticino.com]

Hello Hans-Juergen,

Hans-Juergen Barthen wrote:
> Hi Marco!
> 
> Until today it works stable, no issue anymore.
> 
> There is still a localhost entry in the hosts file, but there are usually 2:
> 
> ------
> 127.0.0.1	localhost
> 
> # special IPv6 addresses
> ::1		localhost ipv6-localhost ipv6-loopback
> ------
> 
> netstat showed port 27754 activ on "::1" only, so it was only listening on
> the ipv6-localhost.
> That did not work, I am not using IPv6.
> 
> Here my localhost configuration:
> 
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:1503362 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1503362 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:180344849 (171.9 Mb)  TX bytes:180344849 (171.9 Mb)
> 
> My suggestion is, that IPv6 functionality came in with a new kernel or other
> update and brought up this issue.

You're right. it comes out with the new kernel 2.6 (same is for Fedora 
Core 9).

> Now that I changed the $clusteraddr in DXVars.pm from the default value
> "localhost" to it's v4-IP "127.0.0.1" netstat shows port 27754 listening on
> 127.0.0.1 again as usual and everything works fine.

I had the same issue few years ago with CLX, then fixed as you said.

> 73 de Hans, DL5DI

Glad that all is working properly.

Enjoy your cluster
Happy Holidays.

HB9DHG - Fulvio
http://www.hb9dhg.ch



> 
> 
>> -----Ursprüngliche Nachricht-----
>> Von: dxspider-support-bounces at dxcluster.org 
>> [mailto:dxspider-support-bounces at dxcluster.org] Im Auftrag 
>> von Marco Zollinger, HB9CAT
>> Gesendet: Freitag, 19. Dezember 2008 08:35
>> An: 'The DXSpider Support list'
>> Betreff: [Dxspider-support] R: Port 27554 issues
>>
>> Hans,
>>
>> still the situation doesn't seem to be stable, if netstat 
>> doesn't show any listener or established socket it shouldn't work...
>>
>> Could you check /etc/sysconfig/network/ifcfg-lo to make sure 
>> the local loop interface is indeed configured ? it may be 
>> corrupted since your crash. Mine (opensuse as well) looks like this:
>>
>> # Loopback (lo) configuration
>> IPADDR=127.0.0.1
>> NETMASK=255.0.0.0
>> NETWORK=127.0.0.0
>> BROADCAST=127.255.255.255
>> STARTMODE=onboot
>> USERCONTROL=no
>>
>> Regarding the discrepancy between 'localhost' and 127.0.0.1 
>> this should be only dependent on /etc/hosts (as you state as 
>> well), just make sure you still have the 
>> 127.0.0.1       localhost
>> line there.
>>
>> Just trying to help an opensuse colleague ;-)  using 10.2 
>> kernel 2.6.18.2 here
>>
>> Marco, HB9CAT
>>
> 
> 
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