查询本机DNS状况
dig -t a taobao.com
; <<>> DiG 9.10.6 <<>> -t a taobao.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26117
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;taobao.com. IN A
;; ANSWER SECTION:
taobao.com. 103 IN A 140.205.220.96
taobao.com. 103 IN A 140.205.94.189
;; Query time: 1 msec
;; SERVER: 10.65.1.3#53(10.65.1.3)
;; WHEN: Sat Dec 22 04:21:40 CST 2018
;; MSG SIZE rcvd: 71