C:\WINDOWS\system32>nslookup
www.youtube.com 223.5.5.5
服务器:
public1.alidns.com Address: 223.5.5.5
非权威应答:
DNS request timed out.
timeout was 2 seconds.
名称:
youtube-ui-china.l.google.com Address: 108.160.162.107
Aliases:
www.youtube.com youtube-ui.l.google.com C:\WINDOWS\system32>nslookup
www.youtube.com 223.5.5.5
服务器:
public1.alidns.com Address: 223.5.5.5
非权威应答:
DNS request timed out.
timeout was 2 seconds.
名称:
www.youtube.com Address: 107.22.161.187
C:\WINDOWS\system32>nslookup
www.youtube.com 223.5.5.5
服务器:
public1.alidns.com Address: 223.5.5.5
非权威应答:
DNS request timed out.
timeout was 2 seconds.
名称:
youtube-ui-china.l.google.com Address: 108.160.162.107
Aliases:
www.youtube.com youtube-ui.l.google.com C:\WINDOWS\system32>nslookup
www.youtube.com 223.5.5.5
服务器:
public1.alidns.com Address: 223.5.5.5
非权威应答:
DNS request timed out.
timeout was 2 seconds.
名称:
youtube-ui-china.l.google.com Address: 69.171.239.20
Aliases:
www.youtube.com youtube-ui.l.google.com C:\WINDOWS\system32>nslookup
www.youtube.com 223.5.5.5
服务器:
public1.alidns.com Address: 223.5.5.5
非权威应答:
DNS request timed out.
timeout was 2 seconds.
名称:
youtube-ui-china.l.google.com Address: 108.160.162.107
Aliases:
www.youtube.com youtube-ui.l.google.com C:\WINDOWS\system32>
其中 69.171.239.20 似乎是非死不可的一个 ip
这种机制似乎不是从固定列表里返回 而是返回其他的黑名单域名的正常解析结果
要是这么打乱各种相应返回该怎么应对( chinadns 最近失效 今天才发现原因