Naming the IPv4 reverse DNS zone
To properly format the Domain field in the interface using IPv4:
1. Drop the last octet from the IP address.
2. Reverse the order of the remaining octets.
3. Append in-addr.arpa to the end of the remaining octets.
4. Enter this value in the Domain field of the Add a DNS Zone feature.
For example, the reverse DNS zone for 192.168.0.1 is 0.168.192.in-addr.arpa.
You will specify the last octet of the IP address within the zone file.
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