Re: [Add] Fw: [EXTERNAL] New Version Notification for draft-jt-add-dns-server-redirection-03.txt

[Manu Bretelle <[e-mail]>]

On Mon, Mar 4, 2024 at 10:23 AM Tommy Jensen <Jensen.Thomas=
[e-mail]> wrote:

> Good day add WG,
>
> We have submitted the -03 of EDSR for IETF 119 discussion. The only major
> change (and it's a big one) is to remove the controversial SOR mode, so
> that the draft only supports redirections to other servers with the same
> domain name. This addresses what we believe to be the main pushback on the
> draft.
>

Thanks for taking this out.

One thing in the current draft which I am not clear how a client should
handle is if the newly discovered target was to become unavailable.
I expect and see the redirection to be useful when you have a pool of
anycast server worldwide and can redirect the clients based on
latency/capacity…. to a “unicast” IP which then directs to a specific
cluster/location. That location may become unavailable for multiple reasons
(maintenance, operational incident, fiber cuts…) and I am not sure what the
expected client behaviour should be we can probably rely on the fact that
multiple resolvers are configured and that those should, if handled by the
same entity, redirect to different location and call it a day.

Manu