Is it possible to completely deactivate CmpBlkDrvUdp?

I managed to practically deactivate it by setting MaxRouters=1 in [CmpRouter], but in the log there are warnings:

!!!! No router instance found to assign network interface <interface>ether 6</interface>

[CmpRouter]
MaxRouters=1
0.MainNet=BlkDrvTcp

[CmpBlkDrvTcp]
Name=BlkDrvTcp

Codesys Runtime 4.10.0.0

Is there a setting in [CmpBlkDrvUdp] which would deactivate it?

why do you want do to this?

Because it starts listening on all interfaces, which is against security considerations.

you could give this a try - just an idea, I did not try it because have no device in my hands:

[CmpBlkDrvUdp]
MaxInterfaces=1
itf.0.ipadress=192.168.10.1

It works!

MaxInterfaces=0 deactivates the UDP backend

[CmpBlkDrvUdp]
MaxInterfaces=0

Thank you!