虾米设置了两台自己的域名服务器,
ns1.xiami.com 和
ns2.xiami.com。
但是这两台机器本身就不够稳定,比如现在第二台是这样的状况:
$ ping
ns2.xiami.comPING
ns2.xiami.com (122.224.143.164): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
^C
---
ns2.xiami.com ping statistics ---
5 packets transmitted, 0 packets received, 100.0% packet loss
$ nmap 122.224.143.164
Starting Nmap 5.51 (
http://nmap.org ) at 2011-07-09 08:34 CST
Note: Host seems down. If it is really up, but blocking our ping probes, try -Pn
Nmap done: 1 IP address (0 hosts up) scanned in 3.17 seconds