Folks, FYI: <http://searchenterprisewan.techtarget.com/tip/First-hop-security-in-IPv6> "This article provides an introduction to the concept of first-hop security and discusses the challenge of trying to apply the techniques currently enforced in IPv4 networks to emerging IPv6 deployments." P.S.: The whole article is available online, and you can read it even without registering... just scroll the web page... Best regards, -- Fernando Gont SI6 Networks e-mail: fgont@xxxxxxxxxxxxxxx PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492