Updating dns server nsd is not the configured local nameserver

As you know, DNS resolution maps a fully qualified domain name (FQDN), such as to an IP address. The reverse is also true: By performing a reverse lookup, DNS can determining the fully qualified domain name associated with an IP address.Many different Web sites can map to a single IP address, but the reverse isn't true; an IP address can map to only one FQDN.If your ISP provides your router/firewall with its Internet IP address using DHCP then you must consider dynamic DNS covered in Chapter 19, "Dynamic DNS".For now, I'm assuming that you are using static Internet IP addresses.A caching DNS name server is used as a reference only, regular name servers are used as the authoritative source of information for your Web site's domain.Note: Regular name servers are also caching name servers by default.