[Dxspider-support] R: Port 27554 issues

[Hans-Juergen Barthen]

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.
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.

73 de Hans, DL5DI


> -----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
>