nanog mailing list archives
Re: well-known Anycast prefixes
From: Bryan Holloway <bryan () shout net>
Date: Thu, 21 Mar 2019 11:31:53 -0500
On 3/21/19 10:59 AM, Frank Habicht wrote:
Hi James, On 20/03/2019 21:05, James Shank wrote:I'm not clear on the use cases, though. What are the imagined use cases? It might make sense to solve 'a method to request hot potato routing' as a separate problem. (Along the lines of Damian's point.)my personal reason/motivation is this: Years ago I noticed that my traffic to the "I" DNS root server was traversing 4 continents. That's from Tanzania, East Africa. Not having a local instance (back then), we naturally sent the traffic to an upstream. That upstream happens to be in that club of those who don't have transit providers (which probably doesn't really matter, but means a "global" network).
/snip
Greetings, Frank
I can think of another ...We rate-limit DNS from unknown quantities for reasons that should be obvious. We white-list traffic from known trusted (anycast) ones to prevent a DDoS attack from throttling legitimate queries. This would be a useful way to help auto-generate those ACLs.
Current thread:
- Re: well-known Anycast prefixes, (continued)
- Re: well-known Anycast prefixes Hansen, Christoffer (Mar 19)
- Re: well-known Anycast prefixes Grzegorz Janoszka (Mar 19)
- Re: well-known Anycast prefixes Bill Woodcock (Mar 19)
- Re: well-known Anycast prefixes Bill Woodcock (Mar 19)
- Re: well-known Anycast prefixes Frank Habicht (Mar 19)
- Re: well-known Anycast prefixes Bill Woodcock (Mar 19)
- Re: well-known Anycast prefixes Frank Habicht (Mar 19)
- Re: well-known Anycast prefixes James Shank (Mar 21)
- Re: well-known Anycast prefixes Frank Habicht (Mar 21)
- Re: well-known Anycast prefixes Job Snijders (Mar 21)
- Re: well-known Anycast prefixes Bryan Holloway (Mar 21)
- Re: well-known Anycast prefixes Ross Tajvar (Mar 21)
- Re: well-known Anycast prefixes Bryan Holloway (Mar 21)
- Re: well-known Anycast prefixes Bill Woodcock (Mar 21)
- Re: well-known Anycast prefixes Grzegorz Janoszka (Mar 19)
- Re: well-known Anycast prefixes Hansen, Christoffer (Mar 19)