The issues raised by Rakesh Mohan Agarwal are very genuine and appropriate at the national level. If the address allocation for all the ISPs is being done from a /16 address block , it is definitely easier for the security agencies to trace the source. routing at the national level through national Internet exchange (NIXI) will be simpler and will have far less entries. -- SUDEEP KUMAR GM(Broad band) ALTTC 09412739222