root@students1804:~/NetworksLab2018AU/dns/server# ./server 53
ya.ru
Done.
google.ru
Done.

build@students1804:~/NetworksLab2018AU/dns/client$ nslookup ya.ru 127.0.0.1
;; Got bad packet: bad label type
43 bytes
b2 fd 81 00 00 01 00 01 00 00 00 00 79 61 2e 72          ............ya.r
75 00 00 00 01 00 02 79 61 02 72 75 00 00 01 00          u......ya.ru....
01 00 c8 00 00 00 04 57 fa fa f2                         .......W...

build@students1804:~/NetworksLab2018AU/dns/client$ nslookup google.ru 127.0.0.1
;; Got bad packet: bad label type
51 bytes
fa fa 81 00 00 01 00 01 00 00 00 00 67 6f 6f 67          ............goog
6c 65 2e 72 75 00 00 00 01 00 06 67 6f 6f 67 6c          le.ru......googl
65 02 72 75 00 00 01 00 01 00 c8 00 00 00 04 ad          e.ru............
c2 dd 5e                                                 ..^