Error message Network is unreachable

dakiar Aug 18, 2009 10:15 AM

exception=java.io.IOException: Network is unreachable, msg=[dst: 228.1.2.3:45566, src: se-ore-webp-test:32781 (additional data: 14 bytes) (2 headers), size = 0 bytes], mcast_addr=228.1.2.3:45566

I am running jboss on a server which does not have internet access, and keep getting this IOException, it appears to come from Jboss as I don't have any applications of my own deployed.

Does anyone know what it means?? I guess I could disable it somehow? or make internet availaible and it would go away??

Thank you for clearing the confusion.

Regards,
Dak.

1. Re: Error message Network is unreachable

f_marchioni Aug 18, 2009 11:45 AM (in response to dakiar)

are you running on a linux box ?
try adding -Djava.net.preferIPv4Stact=true in the Optional JVM args
also are you running a single node or clustered env ?

francesco
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2. Re: Error message Network is unreachable

dakiar Aug 19, 2009 3:18 AM (in response to dakiar)

I am running a clustered server with 1 cluster. I am running on a linux box.

The -Djava.net.preferIPv4Stact=true appaers to not help :(
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3. Re: Error message Network is unreachable

dakiar Aug 19, 2009 3:35 AM (in response to dakiar)

Can I find out where the exception is cooming from?

11:35:20,165 ERROR [UDP] exception=java.io.IOException: Network is unreachable, msg=[dst: 228.1.2.3:45566, src: se-ore-webp-test:32787 (additional data: 14 bytes) (2 headers), size = 0 bytes], mcast_addr=228.1.2.3:45566
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4. Re: Error message Network is unreachable

f_marchioni Aug 19, 2009 4:08 AM (in response to dakiar)

have a look here:

http://www.jboss.org/community/wiki/JGroups

look in the troubleshooting section. It's likely that you need to adjust multicast configuration.

hope it helps
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5. Re: Error message Network is unreachable

dakiar Aug 19, 2009 4:54 AM (in response to dakiar)

Thank you, with the information there I managed to solve it! It was related to the IP stack just as you guessed!
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