無法解析名稱 - BBS

ping -c 4 8.8.8.8

PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=50 time=7.242 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=50 time=7.936 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=50 time=7.046 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=50 time=7.260 ms

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev 7.046/7.371/7.936/0.337 ms

像這樣以IP來ping算是連線正常了呀...
除了刮號內應該出現的正解沒有產生

但是如果是做下面的:

ping -c 4 www.google.com
ping: cannot resolve ww.google.com: Host name lookup failure

是產生這樣的結果,
而且在錯誤訊息出來前會delay好幾秒, VB的網路狀態燈也有忙碌的閃爍

nslookup www.google.com
;; connection time out; no servers could be reached

同樣有嚴重的延遲

在nslook底下查看server資訊是如下:

Default server: 8.8.8.8
Address: 8.8.8.8#53
Default server: 140.113.1.1
Address: 140.113.1.1#53
Default server: 168.95.1.1
Address: 168.95.1.1#53

都是我在/etc/resolv.conf裡頭所設的三台DNS
端口阜號53看來也是合理 Q ~ Q

所以真的很讓人百思不得其解...

另外, 從外部電腦是可以ping得到我的主機的, by IP/FQDN
也同樣可以透過SSH遠端回來操作, also by both



※ 引述《in2 (海帶呀海帶~~)》之銘言：
: 你的錯誤訊息是什麼啊?
: nslookup www.google.com 說什麼?

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