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RUTX11 with firmware 2.06.1 and RUT240 with firmware 1.14.3.

In the Wireguard GUI, I've created a tunnel between the 2 routers. I then wanted to edit the RUTX11 and the RUT240 so that I could try an MTU of 1440, however the GUI throws an error, outlining the number with a red box, and indicating that the maximum value is 1420. As Im running an IPv4 network, I should be able to set it to 1440, and still keep the total size to 1500 even including the Wireguard headers. I havent tried setting it in CLI as an option, but wonder if this GUI behaviour is correct?

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Hello,

WebUI validation is correct and I have checked that our RnD team thought these values will be closer to the real use case and they left an option to change MTU via SSH for such use cases as yours.

Regards.