dos alias/cname address
diego@localhost sdk/include/Poco/Net]# dig b.wpss.cn ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> b.wpss.cn ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6817 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;b.wpss.cn. IN A ;; ANSWER SECTION: b.wpss.cn. 575 IN CNAME a.wpss.cn. a.wpss.cn. 575 IN A 10.211.55.2 a.wpss.cn. 575 IN A 10.211.55.3 ;; Query time: 17 msec ;; SERVER: 10.211.55.1#53(10.211.55.1) ;; WHEN: Thu May 26 16:12:16 2016 ;; MSG SIZE rcvd: 75