DNS . /ftp . IP. DNS IP requester. DNS a . taragana.com.ho sts ( taragana.com ) :

taragana.com.                    A            72.36.134.170
                                            A            72.36.134.130

taragana.com IP: 72.36.134.170 72.36.134.130.

: /var/named /var/named/chroot/var/named.
ftp. taragana.com , nameserver in-between, IP.

stateless / .
statefull IP .

: . ? transitioning IP 130 170. 130 DNS.

BTW: DNS failover DNS . DNS .