Wed, Jun 29, 2016 at 10:54:30PM +0200, Job Snijders:
> On Wed, Jun 29, 2016 at 09:46:15PM +0100, Nick Hilliard wrote:
> > Job Snijders wrote:
> > > Should it be somehow clarified that router vendors are not supposed to
> > > implement mechanisms, which are by default enabled, that discard traffic
> > > for BLACKHOLE'ed prefixes?
> > 
> > I would have said the opposite, i.e. that any traffic tagged with this
> > prefix is dropped via e.g. null0 or martian mechanisms / etc.  But it
> > definitely needs to be defined because at the moment it's ambiguous.
> > Ambiguity is fine when it's your own network, but not fine when you're
> > defining something with global scope.
> 
> Why would you say the opposite? That goes counter to what the vendors
> are shipping today. The suggestion "do not do anything" is compatible
> with what ships today! :)
> 
> We can add a new section "3.4 - Vendor recommendations" and describe
> what it is we'd expect a network device vendor to implement or not to
> implement. 

It may be useful to be able to forward BH traffic off a router for analysis,
so discarding may not be desired.  I'd leave what is done with traffic by
default for configuration by operator.

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