Windows 下的

正确响应

C:\Users\chuwen>nslookup - 2400:3200::1
默认服务器:  UnKnown
Address:  2400:3200::1

> cron.iton.pw
服务器:  UnKnown
Address:  2400:3200::1

非权威应答:
名称:    nas.iton.pw
Address:  2409:8a38:6821:2990:c8f8:1555:c7f3:9d58
Aliases:  cron.iton.pw

Debian 下的

root@Chuwen:/opt# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 9.11 (stretch)
Release:        9.11
Codename:       stretch

root@Chuwen:/opt# nslookup - 2400:3200::1
> cron.iton.pw
Server:         2400:3200::1
Address:        2400:3200::1#53

Non-authoritative answer:
cron.iton.pw    canonical name = nas.iton.pw.
> nas.iton.pw
Server:         2400:3200::1
Address:        2400:3200::1#53

Non-authoritative answer:
*** Can't find nas.iton.pw: No answer

这是什么问题