Another small problem is that EPICS 3.13 IOCs may send their beacons to the "wrong" port. This happens when EPICS_CA_ADDR_LIST contains host:port entries. In this case, the IOCs send the beacons to the given search port too. These are the reason for the "invalid (damaged?) request code from UDP" messages. Some code is needed to ignore CA_PROTO_RSRV_IS_UP messages on the wrong port.
Another small problem is that EPICS 3.13 IOCs may send their beacons to the "wrong" port. This happens when EPICS_CA_ADDR_LIST contains host:port entries. In this case, the IOCs send the beacons to the given search port too. These are the reason for the "invalid (damaged?) request code from UDP" messages. Some code is needed to ignore CA_PROTO_RSRV_IS_UP messages on the wrong port.