Hi bird list, I am thinking about this for some time now, reading documentation and all but I did not find a solution until now, so I am turining to you: Does bird (1.4.5) support aggregate routes in any way? The Scenario is as follows. I have a VPN consisting of around 20-40 ptp-links, an OSPF area that spans these links and several larger subnets that are connected to the nodes that interconnect using the named ptp links. So far so good. I would not want to interfere with the Prefixes in the OSPF. I however have a BGP-session to another network and I am exporting most of my routes to that session. I'd like to replace all the /32 routes for ptp links with the /24 they are taken from while exporting routes for that BGP session. Since it is totally irrelevant for the peer, which parts of the /24 are available, I would just like to attract traffic to the networks I manage as long as there are any contributing routes. I had several ideas on how to do that, one being an export filter that replaces every /32 with the according /24, but that would lead to a lot of /24 routes and seems to be impossible with bird since the prefix attribute is immutable. Another idea was a static route for the containing /24 that would be exported via BGP while the /32 were filtered away. That however leaves the /24 route in place even if there are no more /32 routes left. If there is a way to change that, that would be great. If anyone has any idea how to accomplish this, it would be very much appreciated. Thanks in advance, Joel /jbn -- Joel Brunenberg - Troisdorf PGP: 0xAD25981C