Celkom nerozumiem Vasej argumentacii. Ak ste ISP, ktory ma mnozstvo predplatitelov s jednym PC, mozete takychto predplatitelov dat na jeden /64 subnet (rfc3177):
[i] When a network number is delegated to a place that [b]will not[/b] require subnetting, therefore, it might be acceptable for an ISP to give a single 64-bit prefix – perhaps shared among the dial-in connections to the same ISP router.[/i]
Ak mate predplatitela(instituciu), ktory ma v umysle si dalej delit siet, date mu /48 prefix (rfc3177):
[i]the IETF's IPNG working group has recommended that the address block given to a single edge network which may be recursively subnetted be a 48-bit prefix. [/i]
V com je teda problem? Mozno nerozumiem ako ste to mysleli. Dakujem.