root@d0c3205330f6:/build#
root@d0c3205330f6:/build# nslookup localhost
Server:		10.0.2.3
Address:	10.0.2.3#53

Name:	localhost
Address: 127.0.0.1

root@d0c3205330f6:/build# dig localhost

; <<>> DiG 9.10.3-P4-Ubuntu <<>> localhost
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57747
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;localhost.			IN	A

;; ANSWER SECTION:
localhost.		604800	IN	A	127.0.0.1

;; AUTHORITY SECTION:
localhost.		604800	IN	NS	localhost.

;; ADDITIONAL SECTION:
localhost.		604800	IN	AAAA	::1

;; Query time: 1 msec
;; SERVER: 10.0.2.3#53(10.0.2.3)
;; WHEN: Mon Feb 06 18:04:37 UTC 2017
;; MSG SIZE  rcvd: 96

root@d0c3205330f6:/build#