DirectAdmin License update \ip change
DirectAdmin will not be running, as the license file will be invalid.
Get the new license file and replace 1234 with your client ID number, and replace 56789 with your license ID number:
cd /usr/local/directadmin/scripts
./getLicense.sh 1234 56789
Start DirectAdmin with the new license:
/etc/init.d/directadmin restart
Run the ipswap.sh script to replace the old server IP (1.2.3.4) with the new server IP (4.3.2.1)
cd /usr/local/directadmin/scripts
./ipswap.sh 1.2.3.4 4.3.2.1
Official source: http://help.directadmin.com/item.php?id=250