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I haven't really spent time dissecting the bug so I have little to add there, but I suspect you may not have access to full figures showing the scale of the problem. Rather than looking at unstable prefixes, have you looked at traffic levels at various IXes showing, in the case of LINX and AMS-IX, a 10-20% drop in traffic levels?<br /><br />It seems the bug may have had more of an impact on iBGP sessions than eBGP ones due to the nature of service providers networks plus it also had an apparent major impact on the network of BT, the local ex-monopoly telco in the UK and affected service to a large number of DSL (And oddly, 3G) services.