Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 592)

2.
Select an option to configure.
Select an option to access the screen for numerical input.
To use a gateway or DNS address, select [ Enable ], then select
[ Address ].
3.
Enter the number.
Turn the < > dial to switch to other input fields at the top of the
screen, and turn the < > dial to select numbers to enter. Press
< > to enter the selected number.
To set the entered numbers and return to the screen for step 2, press
the <
> button.
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