Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.17 from

 http://maven.aliyun.com/nexus/content/groups/public/ was cached in the local repository,

 resolution will not be reattempted until the update interval of aliyun has elapsed or updates are forced.

 Original error: Could not transfer artifact org.apache.maven.plugins:maven-surefire-plugin:pom:2.17

 from/to aliyun (http://maven.aliyun.com/nexus/content/groups/public/): No route to host: connect

 pom.xml /config line 1  Maven Configuration Problem