In your LAN, there has been a change in the IP address of one host. You have changed the relevant A record in the DNS zone file(s) and restarted named. Still, the old IP address is being served out by the DNS server. The problem could be that:

• A. You have forgotten to increment Serial in the zone file
• B. You have forgotten to decrease the TimeToLive in the zone file(s)
• C. You have check from the whois database
• D. You have forgotten to update /etc/nameconf