DNS报connection timed out; no servers could be reached错误

DNS报connection timed out; no servers could be reached错误
今天在学DNS的配置,操作系统RHEL4,软件Bind,caching-nameserver,把正向解析文件和反向解析文件配置好后,用nslookup测试报错connection timed out; no servers could be reached,开始以为是named服务没有正常启动,手动重启服务后问题依旧,最后终于找到问题出在哪里了,原来是配置DNS后没有修改系统原来的DNS地址,路径/etc/resolv.conf,修改为当前主机IP地址后,一切正常。