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