3 ms·
They could do that, but ISP's prefer to not fill up their routing table with lots of null routes. IPv6 addresses and subnet masks are 4 times the size of IPv4'
by elliotanderson 14y ago
They could do that, but ISP's prefer to not fill up their routing table with lots of null routes.
IPv6 addresses and subnet masks are 4 times the size of IPv4's - shifting IP's between a number of different ranges would start to make any network engineer cringe - especially if they start blocking at the /64 level (i.e. smallest allocation possible at the moment - 18,446,744,073,709,551,616 addresses)