u need to get rid of LAN.. it is possible that there are ppl using
your
router or ur comp for surfing and u will end up paying for
them. secure ur comp/
laptop/router.
just a note (applies to bridged mode or for router):
there is nothing like LAN in MTNL
ADSL.
mask is always 255.255.255.255
which means its just single comp network.(i.e. ur own comp).
if ur ip is 59.1.2.3 and u r accessing 59.1.2.4 u will still end up paying
for data.