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From "Andreas Korneliussen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1432) derbynetmats/NSinSameJVM.java fails to run due to Warning "UnknkownHostException: dyn<xx>" on Linux with DHCP generated hostname
Date Mon, 03 Jul 2006 14:35:30 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1432?page=comments#action_12418971 ] 

Andreas Korneliussen commented on DERBY-1432:

The  derbynetmats/NSinSameJVM.java  test fails often with this error on Windows in the nightly
regression tests. I think the reason is that the test starts the network server on ip ""
, which is a special-use interface. On windows, you may often see that network interfaces
which are down, get the address. I think this could be fixed by using localhost instead.
I do not see how this error is related to the RFE in the bugtraq database: the RFE is to have
InetAddress.getLocalHost().. return an IP address which is something else than the loopback
interface (which again contradicts the current JavaDoc of InetAddress.getLocalHost())

> derbynetmats/NSinSameJVM.java fails to run due to Warning "UnknkownHostException: dyn<xx>"
on Linux with DHCP generated hostname
> --------------------------------------------------------------------------------------------------------------------------------
>          Key: DERBY-1432
>          URL: http://issues.apache.org/jira/browse/DERBY-1432
>      Project: Derby
>         Type: Bug

>   Components: Test
>     Versions:,
>  Environment: Linux Operating Systems using DHCP IP address *and* hostname generation
>     Reporter: Stan Bradbury
>     Priority: Minor

> The test derbynetmats/NSinSameJVM.java reports that the Network Server failed to start
and aborts on Linux machines that use DHCP to generate a hostname that reflects the generated
IP address (e.g. hostname like: dyn<xx> where <xx> is the IP address string like
216101116144).  Network server does, in fact, start.
> derby.log entry:
> Warning: UnknkownHostException: dyn<someIP>: dyn<someIP>.
> Server is ready to accept connections on port <some-port>.
> derbyall.sum entry:
> > FAIL Network Server did not start
> Test Failed.
> *** End:   NSinSameJVM jdk1.5.0_07 DerbyNetClient derbynetmats:derbynetmats 2006
> Appears to be related to reported JVM issue: Bug ID:   	 4665037
>   Synopsis  	 InetAddress.getLocalHost() ambiguous on Linux systems
> see: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4665037

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