Dynamic Hostnames
 

It's been awhile since I have tried to work with BIND and DHCP on linux, and I am trying to figure out how to get dynamic hostnames to work properly.

Basically, I have a DHCP server, and a DNS server. I want a machine to be able to set its own hostname, and get a DHCP address, but I need other machines to be able to ping that new machine by name, so, for example:

machine A's hostname is foo, FQDN is foo.bar.com.

Foo comes online, gets address 10.1.142.123
Foo set's it's own hostname to foo.

Now, the problem I run into is that I can access the machine via IP, but attempting pings via the name, either by "ping foo" or "ping foo.bar.com" fails with an unknown host error. I need to figure out how to enable it so that the DNS server/DHCP server some how allow the "dynamic" hostname.

Thanks