[dns-operations] Route 53 Unexpected geo location behavior

[Dave Lawrence]

Dan McCombs via dns-operations writes:
> Ah, yes, so in this case the addresses given back when no edns
> subnet is provided are the addresses of servers in eu-west, whereas
> with the resolver's own IP (or /24 subnet, or the subnet of clients
> querying it) as the edns subnet gets more expected us-west responses
> since this resolver and clients are in San Francisco.

Yes, and this is the case for several other implementations.  I can't
say that it's true of *all* ECS implementations, but personally know
of two others besides AWS that make this distinction.