During setup, the scanner is assigned a static IP in its configuration.
When it is rebooted the IP assignment is lost.
During the boot sequence the device appears with the correct IP. Before the web interface becomes available the device loses the correct IP and takes a DHCP address.
Software version on the scanner was outdated and an upgrade to 6.1.x was needed.
Component : ICSP NEURAL Scanner
Issue was resolved by upgrading to 6.1.x. (link to upgrade instructions below)
Static IP address was maintained after reboot.