Hi,
I am using OpenSolaris, I have configured my system with DHCP.
My problem is the /etc/hosts in not getting updated whenever the new IP has been assigned.I have to make an entry every time in the /etc/hosts whenever a new IP is assigned. Actually I am doing a project on Network Monitoring System, In which I retrieve the host name and the Host Address to monitor it.

This is my /etc/hosts entry

127.0.0.1 loghost solaris
172.1.3.90 loghost solaris

In which i have entered 172.1.3.90. And I have to change ts entry every time a new IP is assigned to my Network Interface. I query the Host address in my program as

String Hostname = InetAddress.getLocalHost().getHostAddress();
System.out.println("The Hostname is :"+Hostname);

This always prints "172.1.3.90", even though the IP is changed.

As per my understanding, the /etc/hosts should be updated dynamically with DHCP, but its not happening.

Please help me in resolving this problem.

Thanks
-Chandan

To my knowledge, the /etc/hosts file won't change with a DHCP change. When the system is booted, it'll request a new address, and configure the interface accordingly. Depending on the search order, you'll either look at DNS or hosts first. If you do a query, and it succeeds with a host file lookup, it stops there, because it found what it needed.

Remove the line from /etc/hosts, and try it.

Your /etc/hosts is bogus. 127.0.0.1 should have localhost as primary name, only one loghost alias should be there and solaris should resolve in a single IP address.

I guess nwam might update your /etc/hosts file but your dhcp server should provide a hostname along with the IP address for this to work (if nwam does it really).