dns解析不稳定

rongjun_cui

dns服务器解析不稳定，有时候可以，有时候DNS request timed out

> www.sina.com
Server:  svr3.sd.gov.cn
Address:  19.200.2.3

Non-authoritative answer:
Name:    ara.sina.com.cn
Addresses:  58.63.236.27, 58.63.236.28, 58.63.236.29, 58.63.236.30
          58.63.236.31, 58.63.236.32, 58.63.236.33, 58.63.236.34, 58.63.236.35
          58.63.236.36, 58.63.236.37, 58.63.236.38, 58.63.236.39, 58.63.236.49
          58.63.236.50, 58.63.236.26
Aliases:  www.sina.com, us.sina.com.cn, news.sina.com.cn
          jupiter.sina.com.cn

> www.baidu.com
Server:  svr3.sd.gov.cn
Address:  19.200.2.3

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to svr3.sd.gov.cn timed-out
> www.sina.com
Server:  svr3.sd.gov.cn
Address:  19.200.2.3

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to svr3.sd.gov.cn timed-out
>

llzqq

线路不畅导致解析超时

ruochen

LZ多测试几次

用tcpdump监控一下