For most things, the IP number and hostname of the linux clients that communicate with the VxWorks machines on board the oven does not matter. However, in rare cases the oven machines may try to contact what it thinks are crater and/or dorado. For this reason, when we fully commit ourselves to using linux machines to replace crater and dorado, they need to respond at the same IP numbers that were long ago assigned to these machines.
The reason for this is that VxWorks, at least in the oven VME machines, does not support DNS. VxWorks uses a static table of host addresses. Other than the boot host, those are given by the following table, which is compiled into each on board machine:
hostAdd ("oven0v0", "192.168.1.40");
hostAdd ("oven0v1", "192.168.1.41");
hostAdd ("oven0v2", "192.168.1.42");
hostAdd ("oven1v0", "192.168.1.50");
hostAdd ("crater", "192.168.1.11");
hostAdd ("dorado", "192.168.1.10");
hostAdd ("astro", "128.196.176.1");