On 2012-08-16, Claudio Jeker <cje...@diehard.n-r-g.com> wrote: > On Thu, Aug 16, 2012 at 02:47:25PM +0200, Bernd wrote: >> Hi list, >> >> I'd like to blackhole some traffic. For instance, my AS is >> 12.34.56.0/20, so 12.34.58.0 might be announced, but is not >> necessarily connected (internal routing via OSPFd). >> >> On Cisco one uses: >> >> ip route 0.0.0.0 0.0.0.0 Null0 >> >> This would throw any traffic headed to a network within my AS, which >> is *not* connected (via OSPF), onto the floor. >> >> Is there a way to achieve this on OpenBSD? >> > > route add default 127.0.0.1 -blackhole > > or for IPv6 (not tested) > > route add -inet6 default ::1 -blackhole >
or s/blackhole/reject if you would like network unreachables rather than just drops.
