Dhcp not updating dns linux
(either on the server side, or on client side configuration) (has this is a test env.
for virtual machines, such scenario of mac address change happens a lot). To turn on dynamic update: /var/named/etc/named.conf: zone "server." ; The allow update IP address is the address of your DHCP server. The notify lets any slave servers know what the update is. dynamic updates and notifications are already working on my server.
Dynamic DNS (DDNS or Dyn DNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information.
The term is used to describe two different concepts.
In the initial stages of the Internet (ARPANET) addressing of hosts on the network was achieved by static translation tables that mapped hostnames to IP addresses.
The tables were maintained manually in form of the host file.
When a DHCP server is added to the Dns Update Proxy group, its records aren't secured, meaning that other DHCP servers can update the records.
In additon, hosts can change the records and then become the owner of the record.
These mechanisms are explained in RFC 2136, and use the TSIG mechanism to provide security.
The Domain Name System brought a method of distributing the same address information automatically online through recursive queries to remote databases configured for each network, or domain.
Even this DNS facility still used static lookup tables at each participating node.
Setup has DHCP3-Server and Bind9 (as name server), on the same server DHCP is configured to update dynamic names on Bind9.
Everything works OK, names are being updated and resolved.