For those of you who mailed me privately to ask for the URL of the GRE (and other tunnel) advisory detailing how to detect and prevent abuse of exchange points etc. to steal third party transit, sorry, I lost most of your email addresses, but it's at: http://www.linx.net/tunnel-advisory.txt (for those who saw it before, no it hasn't changed). -- Alex Bligh GX Networks (formerly Xara Networks)