Как пользоваться nslookup/dig в Linux Mint?

$ dig example.org
; <<>> DiG 9.9.2-P1 <<>> example.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 12798
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;example.org.			IN	A

;; Query time: 0 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Tue Oct 29 18:31:33 2013
;; MSG SIZE  rcvd: 29

$ dig example.org +trace
; <<>> DiG 9.9.2-P1 <<>> example.org +trace
;; global options: +cmd
;; Received 17 bytes from 127.0.1.1#53(127.0.1.1) in 0 ms

...
example.org.		86400	IN	A	93.184.216.119
example.org.		86400	IN	RRSIG	A 8 2 86400 20131105220811 20131029142529 49830 example.org. OTViPA1tkHuy3BygcYARRCv/iFJLBxybLCaKjUOB09vtPBa/tTmrs41C sOAVGqe7NZjJNBPqXIy8FM7HMJEsZQKOHuLYUBZ4OeB0YB6fPhJQ3rfX h0uzrJs/wkgGm3z+5o+Rf/KbCNDAOZnVjQMULzJIpZ0F81WwYrDF2U40 OG0=
example.org.		172800	IN	NS	a.iana-servers.net.
example.org.		172800	IN	NS	b.iana-servers.net.
example.org.		172800	IN	RRSIG	NS 8 2 172800 20131105190449 20131029142529 49830 example.org. cd1Z33VnMfqUysmUjL5BbKanMhI65AriBk12/3TddJG8C2cCrQU1MbrR 54pExaQ5oY/X/X2eWQAcwd1k5YTFpNNAyJx703eHiJTudLGs7RDaa4Yn wF4334x7sRYxxFCVZGTbMn9kI+VqFwvPcawRUdsY/JUHQcqnpiMZ36qb bX4=
;; Received 534 bytes from 199.43.133.53#53(199.43.133.53) in 217 ms

$ cat /etc/hosts
127.0.0.1	localhost
127.0.1.1	mint-15

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

cat /etc/resolv.conf 
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1

# OpenDNS Fallback (configured by Linux Mint in /etc/resolvconf/resolv.conf.d/tail).
nameserver 208.67.222.222
nameserver 208.67.220.220

vim /etc/resolv.conf
nameserver 10.10.0.15
...

ifdown -a
ifup -a