On Fri, Feb 05, 2016 at 01:09:49PM +0100, Anand Buddhdev wrote: > Some Google searches later, I've discovered that Linux doesn't allow > blackhole for IPv6 for some reason. I guess I will use "unreachable" > instead of "blackhole" then. Try: protocol static dropall { preference 50; route 2000::/3 blackhole; }