[dns-operations] Facebook DNS admin around?

[Manu Bretelle]

Hi Chris,

Ping me directly and either provide me with a ticket number that you may
have, the IP of those servers as well as a description of the problem with
more details than the initial thread, the answers you are getting for each
of those resolvers and what would be your expectation.
Are those resolvers serving the same set of users? or you have different
populations behind those?

My corporate email is also available through the OARC directory.


Old, but still relevant, slide 22-23 of
https://www.cs.unc.edu/xcms/wpfiles/50th-symp/Moorthy.pdf explains how we
generate mapping to assign resolver to a given location. 2 resolvers, even
within the same subnet, can be assigned to different POPs if the end users
behind them are generating different measurement results.
I am happy to look/have someone look into why this is happening once I get
more details.

Manu

On Wed, Jun 3, 2020 at 9:29 AM Chris Adams <cma at cmadams.net> wrote:

> So, relevant to my previous request... any Facebook DNS admin around?  I
> still have two recursive servers on adjacent IPs that get quite
> different answers when looking up facebook.com, and customers are
> complaining of problems using these servers (while 8.8.8.8 works).  I'm
> not sure the initial difference is the full problem, but it does seem to
> indicate some internal issue at Facebook's DNS.
>
> --
> Chris Adams <cma at cmadams.net>
> _______________________________________________
> dns-operations mailing list
> dns-operations at lists.dns-oarc.net
> https://lists.dns-oarc.net/mailman/listinfo/dns-operations
>
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