Fri Apr 25 10:06:37 PDT 1997 — UUNet, Sprintlink, MCI and other major backbone carriers had massive routing instability which affected us. Basicly, a Sprintlink customer was announcing that they were the first class C of every classless (CIDR) block on the Internet, and UUNet and others were listening to them. This customer says that it was actually one of their downstream customers, and that they’ve taken that customer and their routers offline. They’ve blamed a bug is their main Bay Networks router for a bug in it’s announcement filtering. Eventually, routes converged, and the network stabilized. -Dane and Scott