I faced a problem dns doesn’t define IP address of my box.
; <<>> DiG 9.9.5-3ubuntu0.1-Ubuntu <<>> box.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 57879
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;box.domain.com. IN A
;; Query time: 2 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sun Feb 08 10:30:51 EST 2015
;; MSG SIZE rcvd: 45
outside a box everything is normal
; <<>> DiG 9.10.1-P1 <<>> box.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23027
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;box.domain.com. IN A
;; ANSWER SECTION:
box.domain.com. 111 IN A 1.1.1.1
;; Query time: 333 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sun Feb 08 17:32:20 IST 2015
;; MSG SIZE rcvd: 61