dig -x 172.16.1.22

; <<>> DiG 9.2.4 <<>> -x 172.16.1.22
;; global options:  printcmd
;; connection timed out; no servers could be reached



more /etc/resolv.conf
nameserver 127.0.0.1



zone "16.172.in-addr.arpa" {
        type master;
        file "16.172.in-addr.arpa.zone";
        allow-update { none; };
};