[omniORB] incorrect IP address after update to SuSE 11.1

[Tim Theisen]

omniORB should not be picking 127.0.0.2.  According to RFC 1700 (Page
5):

Special Addresses

...

      (g)   {127, <any>}

         Internal host loopback address.  Should never appear outside
         a host.

So, anything starting with 127 is a loopback address.

...Tim
--
       Tim Theisen                     Lead Research Software Engineer
Phone: +1 608 824 2848                 TomoTherapy Incorporated
  Fax: +1 608 824 2996                 1240 Deming Way
  Web: http://www.tomotherapy.com      Madison, WI 53717-1954 
-----Original Message-----
From: omniorb-list-bounces at omniorb-support.com
[mailto:omniorb-list-bounces at omniorb-support.com] On Behalf Of Duncan
Grisby
Sent: Monday, April 20, 2009 04:49
To: Nikolas Kauer
Cc: omniorb-list at omniorb-support.com; Stefan Karg
Subject: Re: [omniORB] incorrect IP address after update to SuSE 11.1

On Wednesday 15 April, Nikolas Kauer wrote:

> After the sysadmin updated machines to SuSE 11.1, the
> server/client produces an IOR string with incorrect IP
> address but correct port number:
> 
> $ catior
IOR:010000001300000049444c3a4f6d6e69576f726b65723a312e300000010000000000
000060000000010102000a0000003132372e302e302e32008eb70e000000fede1de64900
006d4c000000000000000200000000000000080000000100000000545441010000001c00
000001000000010001000100000001000105090101000100000009010100
> Type ID: "IDL:OmniWorker:1.0"
> Profiles:
> 1. IIOP 1.2 127.0.0.2 46990 "....I..mL....."
>             TAG_ORB_TYPE omniORB
>             TAG_CODE_SETS char native code set: ISO-8859-1
>                           char conversion code set: UTF-8
>                           wchar native code set: UTF-16
>                           wchar conversion code set: UTF-16
> 
> On SuSE 10.x systems this problem does not occur.  We have
> been using omniORB-4.0.7, so far without any problems (Thanks,
> Duncan!).  We checked that the following holds also on the
> SuSE 11.1 systems: The correct IP address is returned by
> "nslookup <hostname>", "hostname -i" and "/sbin/ifconfig -a".
> /etc/hosts does not contain 127.0.0.2.

Please run with -ORBtraceLevel 25 and send the output.

> Section 8.6 of the omni40 docs states "If the host is empty, the
> ORB published the IP address of the first non-loopback network
> interface it can find (or the loopback if that is the only
> interface), ..."  How does this actually work?

omniORB asks the OS for all its IP addresses, and picks the first one
that is not 127.0.0.1. You strangely have an address of 127.0.0.2, so if
that is the first one in the list, omniORB will pick that.

Cheers,

Duncan.

-- 
 -- Duncan Grisby         --
  -- duncan at grisby.org     --
   -- http://www.grisby.org --

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