hi my friends
sorry if my question is n't related to this section.
i guess here is the best one for asking my question.
anyway...
my question is about ip packet ,in fact flags field in it .
we have 3 flags in fragment section as well as fragment offset.
two of them are DF and MF . but there is one left .that i see in many
references it is reserved and must be set to zero .
my querstion is why is it so? why we have it if we don't use it? just because
of the lenght of fields that must be an exponent of 2 ?
thanks guys.
:surprised
