On Wed, 16 Jan 2008, michael.dillon@bt.com wrote:
And how many get cancelled each year because they are not being paid for, and if they do it's much easier to remove a domain name from the internet. Unless there would be an active system with signatures it's very hard to make sure cancelled PI/PA blocks will disappear from the DFZ.
First of all, if a PI block is not paid for it will disappear from RIPE's DB. I would expect many ISPs to have an internal process for IPv6 Peering customers to regularly check the DB.
Also, there are a number of groups which regularly analyze BGP announcements looking for things like bogons and ghost-routes. I would expect one or more of those groups to include unregistered PI blocks in their reporting. A greater number of ISPs will probably track these reports to make sure that they are following best practices.
Alternatively, PI holders should pay few (> 5) years IPv6 PI registration fee in advance... Janos Mohacsi Network Engineer, Research Associate, Head of Network Planning and Projects NIIF/HUNGARNET, HUNGARY Key 70EF9882: DEC2 C685 1ED4 C95A 145F 4300 6F64 7B00 70EF 9882