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From GitBox <...@apache.org>
Subject [GitHub] ralf0131 opened a new issue #2423: Multicast demo fails with message "Can't assign requested address"
Date Sun, 02 Sep 2018 03:37:09 GMT
ralf0131 opened a new issue #2423: Multicast demo fails with message "Can't assign requested
address"
URL: https://github.com/apache/incubator-dubbo/issues/2423
 
 
   - [x] I have searched the [issues](https://github.com/apache/incubator-dubbo/issues) of
this repository and believe that this is not a duplicate.
   - [x] I have checked the [FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md)
of this repository and believe that this is not a duplicate.
   
   ### Environment
   
   * Dubbo version: master branch
   * Operating System version: macOS 10.13.6
   * Java version: 1.8
   
   ### Step to reproduce this issue
   
   1. start the provider demo
   
   
   ### Expected Result
   
   Provider start success.
   
   ### Actual Result
   
   Provider start failed.
   
   If there is an exception, please attach the exception trace:
   
   ```
   Caused by: java.net.SocketException: Can't assign requested address
   	at java.net.PlainDatagramSocketImpl.join(Native Method)
   	at java.net.AbstractPlainDatagramSocketImpl.join(AbstractPlainDatagramSocketImpl.java:178)
   	at java.net.MulticastSocket.joinGroup(MulticastSocket.java:323)
   	at org.apache.dubbo.registry.multicast.MulticastRegistry.<init>(MulticastRegistry.java:91)
   	... 24 more
   ```
   
   If I add vm args `-Djava.net.preferIPv4Stack=true`, everything works fine.

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