- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate. - [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.
### Environment * Dubbo version: master * Operating System version: all platform * Java version: all version ### Steps to reproduce this issue 1. set SystemProperty "java.net.preferIPv6Addresses" to true. 2. call org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address(). 3. check the return value. ### Expected Result org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address() will return true when SystemProperty "java.net.preferIPv6Addresses" set to true. ### Actual Result org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address() method ignore SystemProperty "java.net.preferIPv6Addresses" and always return false [ Full content available at: https://github.com/apache/dubbo/issues/5237 ] This message was relayed via gitbox.apache.org for [email protected]
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