Select
reverse
(default)
when the IP address in the DNS response requires the opposite translation
that the NAT rule specifies. If the DNS response matches the
Translated
Destination
Address in the rule, translate the DNS response using the reverse
translation that the rule uses. For example, if the rule translates
IP address 1.1.1.10 to 192.168.1.10, the firewall rewrites a DNS
response of 192.168.1.10 to 1.1.1.10.