telnet到FC6的奇怪问题

kennek

从远程telnet到FC6，显示下面的错误信息：
getnameinfo:localhost:Success
Temporary failure in name resolution:Illegal seek

从本地telnet，显示下面的信息：
Trying 192.168.1.99...
Connected to 192.168.1.99 (192.168.1.99).
Escape character is '^]'.
getnameinfo: localhost: Success
Temporary failure in name resolution: Illegal seek
Connection closed by foreign host.

昨天可以登陆的，今天就不可以了，请问是什么问题？