Why is the Orbit Planner failing with the message: “Orbit Planner server communication failure” and/or the words “Server Unavailable” appears at the top of the Orbit Planner display?
APT can’t communicate with the Orbit Planner server when there is a misconfiguration of a unix machines’s network interface (specifically such that its hostname/domain designation does not match its actual IP address). Here are two specific examples that have happened and the fixes. If neither of these examples apply, please generally check your network settings with respect to their hostname and domain. Case 1: You are traveling with your linux laptop and your machine’s full host name (e.g. mymachine.stsci.edu) is hard coded into the file /etc/sysconfig/network, but you are not currently at your home institution. Try editing the host name to be just one word (e.g. mymachine) while you are away. Case 2: Your linux laptop has an IP address assigned by DHCP, but also has a conflicting IP address defined for its hostname in either /etc/hosts or a Domain Name Server (DNS). So, upon boot-up your laptop is given an IP address from DHCP that differed from the IP address listed in the /etc/hos
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