The IP address is used when the unique HostID is created. I have seen manual host regitrations with bogus IP addresses. You don't have to change the manual registration if you change the ip address.
I am trying to understand the process to manually register a host in clariion. I have registered multiple hosts but do not get the concept of why it requires the ip address of the host.  Do we have to update the host ip address in case it changes in the future.
Register host in clariion