18 Apr
2023
18 Apr
'23
19:45
On 2023-04-18 15:41, Per Jessen wrote:
One key concern is the space needed in internet routing tables. With smaller ranges, more entries are needed. The standing recommendation is to dish out /64, but providers also often use /48.
This is also why IPv6 addresses are distributed geographically, so that similar address ranges tend to be in the same physical area. This goes a long way to reducing routing tables. With IPv4, this was not a consideration, which led to address blocks being scattered all over.