1c9cbdf3_HBA_Manager_Application_Readme__Work_Around___Solution
[Issue / Problem Description] When changing the HBA port subnet for systems using DHCP, you need to reset the DHCP option on GUI for to acquire new lease for a QLA4xxx. If the DHCP Server has a long lease time, the system does not acquire a new lease in a reasonable amount of time. [Work Around / Solution] 
Reset the 40xx using the HBA level Options tab by clicking the Reset button. This resets the board and issues a new IP address.
SANsurfer iSCSI HBA Manager Application Readme
Work Around / Solution