Engineers using Siemens TIA Portal, Rockwell Automation Studio 5000, or older RSLogix often see this. The "interface" refers to the programming cable (Profibus, Ethernet/IP) configuration. If the driver for the programming interface crashes, the PLC software throws a 0x0b error.
Operating systems, particularly Linux, have evolved in how they name network ports. Older systems used eth0 , eth1 . Newer systems use Predictable Network Interface Names like enp3s0 . If your software expects eth0 but the kernel has renamed the device enp3s0 , the software looks for a config for eth0 , finds nothing, and throws the error. internal error 0x0b interface config missing