java - InetAddress.getByName 间歇性失败并出现系统错误

Question

我有一些使用InetAddress.getByName. 间歇性地我得到一个UnknownHostException：

java.net.UnknownHostException: google.com: System error
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1246)
    at java.net.InetAddress.getAllByName(InetAddress.java:1162)
    at java.net.InetAddress.getAllByName(InetAddress.java:1098)
    at java.net.InetAddress.getByName(InetAddress.java:1048)

执行nslookup google.com工作，失败本身只是偶尔发生。这可能是什么原因造成的？

Answer 1

尝试查看官方java文档

抛出：UnknownHostException - 如果找不到主机的 IP 地址，或者为全局 IPv6 地址指定了 scope_id。