BGP flap dampening considered harmful

[Sean Donelan <sean () donelan com>]

Providers which aggressively flap dampen routes may want to consider
periodically clearing their dampened routes over the next few days.  A lot
of providers are changing routes, and sometimes its the intermediate
providers reloading their routers causing the flaps.  It seems some people
dampen some routes for hours after they've been restored.