During login, a host may perform a reverse lookup on the IP address of the source address on the packets it receives.
在登录期间,主机可能会对它收到的数据包的源地址的IP地址执行反向查找。
Depending on the configuration of that host, it can take some time for the lookup to fail and the login to continue.
根据主机的配置不同,查找失败会花费一定的时间,然后继续登录。
The example also shows the use of the -n switch, which prints numeric host addresses, thereby avoiding name lookup and resolution and speeding up the trace.
这个示例还演示- n选项的用途,它输出数字的主机地址,从而避免名称查询和解析,可以提高跟踪速度。
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