主题：【请教】连不上国内的站点 -- 江小鱼

兄弟在悉尼，最近突然连不上国内的一些站点。比如www.sina.com.cn 还有 www.sohu.com

可以ping通

ping www.sina.com.cn

Pinging libra.sina.com.cn [61.135.152.82] with 32 bytes of data:

Reply from 61.135.152.82: bytes=32 time=511ms TTL=42

Reply from 61.135.152.82: bytes=32 time=504ms TTL=42

Reply from 61.135.152.82: bytes=32 time=506ms TTL=42

Reply from 61.135.152.82: bytes=32 time=484ms TTL=42

tracert也没问题

Tracing route to libra.sina.com.cn [61.135.152.82]

over a maximum of 30 hops:

1 23 ms 19 ms 26 ms 192.168.1.1

2 21 ms 22 ms 22 ms 233.1.233.220.exetel.com.au [220.233.1.233]

3 24 ms 27 ms 21 ms 254.0.233.220.exetel.com.au [220.233.0.254]

4 24 ms 22 ms 23 ms Vlan366.O2GSC76F03.optus.net.au [203.202.84.65]

5 79 ms 83 ms 81 ms 203.208.148.53

6 131 ms 135 ms 128 ms p6-10.sngtp-cr2.ix.singtel.com [203.208.172.57]

7 129 ms 134 ms 128 ms so-0-0-0.sngc3-cr2.ix.singtel.com [203.208.172.1

30]

8 130 ms 129 ms 131 ms ge-1-0-0.sngc3-ar1.ix.singtel.com [203.208.172.1

62]

9 501 ms 489 ms * 203.208.145.22

10 517 ms 515 ms 517 ms 219.158.3.21

11 478 ms 495 ms 472 ms 219.158.3.13

12 * 506 ms 517 ms 202.96.12.54

13 * 498 ms 481 ms 202.108.47.26

14 488 ms 478 ms 498 ms 202.108.46.10

15 486 ms 483 ms 484 ms 61.135.148.178

16 * 507 ms * 61.135.152.82

17 * 493 ms 496 ms 61.135.152.82

Trace complete.

但是用浏览器登陆新浪会返回下面的网页：

The requested URL could not be retrieved

While trying to retrieve the URL: http://www.sina.com.cn/

The following error was encountered:

Unable to determine IP address from host name for sports.sina.com.cn

The dnsserver returned:

Timeout

This means that:

The cache was not able to resolve the hostname presented in the URL.

Check if the address is correct.

Your cache administrator is webmaster.

Generated Mon, 04 Apr 2005 13:05:50 GMT by 06.cdn.mykenae.com (squid/2.5.STABLE5)

比较迷惑，好象说我的dns服务器有问题，于是我除了用isp提供的两个dns地址外，又添加了3个备用dns,如下：

DNS Servers . :

220.233.0.4

220.233.0.3

139.134.2.2

192.189.54.33

137.222.10.36

结果都一样，都到上面的页面。

不解1:是不是dns的问题？因为我ping www.sina.com.cn时，是能够解析成ip地址的啊。但到浏览器就不行了，ie和firefox都试过。

不解2：我的isp是exetel.com.au,为啥连不上时都是 mykenae.com generated的页面啊？