On the Peplink Balance the default MTU is set to 1440. I am sure there is a very good reason for.
I know that the fiber connections I have has a MTU of 1500 and the ADSL connections a MTU of 1492. Everything is working fine with the default MTU of 1440 but should I change to 1500 and 1492? Theoretically there should be less fragmentation and increasing speed but maybe there is a good reason to stay with 1440.
Can someone explain?