[Koha] IP Address Changed

We are experiencing an "Error:IP Address Changed. Please login again." issue on our system. Does anyone have a solution for this issue? We have heard there is a patch but we are unable to find it. We are running: Koha 3.16.04 but was having same issue on 3.12 Server is an Amazon EC2, t2.micro, instance (Xeon processor w/ 1 gig memory) and an RDS instance running MYsql 5.5 OS is Debian flavored Linux. Thanks in advance for your assistance. Jack