Read man page on 'sys-unconfig'. If it is just IP address
change, you really need not have to run the above command.
Just change in hosts, and if needed defaultrouter and
The command 'sys-config' will prompt you for info. such as
hostname,ipaddress,subnet,name service info,etc. This
command will wipe out all(most) your old information and
will not keep any backup copies of config
files. And you also need to reboot the machine.
Hence decide what you want before you run this potentially