You express constants of type net
in one of two forms, either:
N_1.N_2.
or
N_1.N_2.N_3
where the N_i all lie between 0 and 255. The first of these corresponds
to class B prefixes (note the trailing “.
” that's required to
distinguish the constant from a floating-point number), and the second to
class C prefixes. Deficiency: There's currently no way to specify a class A prefix.