to calculate the ratio, a round-trip IPv6 traffic data is gathered at each observation points
Frequency
Date: Once a month
a day which is expected to be a averaged traffic condition
Time: 24 hours
Method
This research captures the packet in IPv6 network inside ISP to gather the specific data.
The observation point is set on a point at IPv6 network inside ISP. That point depends on 100Mbps FastEthernet and is located as close to outer network as possible.
The count exclude a packet without IPv6 and an IPv6 packet capsuled by any protocol.