if Ignition OPC-UA Server Endpoint Address is set to an static IP (for example 192.168.0.1),
case 1) when Ignition start, the opc-ua server bind to 192.168.0.1 and localhost.
So the server is reachable by opc client as expected from local and remote with 192.168.0.1.
case 2) But if when Ignition start, the network cable is not connected, the opc-ua server seem to bind only localhost.
So the server is reachable only from local.
If you reconnect your network cable, the server is never remotly reachable from 192.168.0.1 !
You need a OPC-UA server module restart in order the server beacame remotly reachable from 192.168.0.1…
@Kevin.Herron, would it be possible that the opc-ua server module manage the case 2)
When the IP became reachable the server bind to it and remote client can reconnect.