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Re: do bogon filters still help?
- From: Florian Weimer
- Date: Wed Jan 11 15:37:59 2006
* william elan net:
>> You should move 126.96.36.199/24 from SPECIAL to YES (although you
>> shouldn't see source addresses from that prefix, no matter what the
>> folks at bit.nl think). 169.254.0.0/16 should be NO (otherwise it
>> wouldn't be link-local).
> I think you just explained it yourself why this is "SPECIAL", i.e.
> routing of it depends on local policies and setup. Anything where it
> is not clear from RFCs if it should be routable or not and where it
> depends on local decisions & policy is what I called SPECIAL.
Uhm, no. 6to4 anycast only works without hickups when the prefix is
NOT treated in any special way. 8-) That's part of its charm. If
operators start to install special filters, they break this
functionality for no real gain.
>> I haven't looked at RFC 3330, but another RFC reserves 192.0.2.0/24
>> for examples in documentation. In practice, this prefix is used for
>> distributing fake null routes over BGP, so it's a rather strong NO.
> If you know which RFC it is, I'll update the reference table.
Uhm, looks like I was mistaken. Each time the topic comes up, I
confuse this with RFC 2606 (domain names). No such RFC exists for