Multiple IOCs on a remote server

[Randall Cayford via Tech-talk <tech-talk at aps.anl.gov>]

I’ve run into a problem I don’t understand.  I’m running 2 IOCs on a machine in a different subnet.   I can access the PVs by adding the remote machine’s IP address to my CA_ADDRESS_LIST.  However I can only access the PVs from one of the IOCs - the IOC that I start second.  Whichever IOC I start second. PVs from both are accessible from machines on the same subnet at the same time but only one set of PVs is accessible remotely.  If I restart the first IOC then it becomes the accessible one and the other becomes inaccessible.

I’ve tried setting up a cagateway on the remote machine and the behavior is the same.   Is there some trick to running multiple IOCs on a machine without which only one will respond to remote requests?

Randall
LBNL