<div dir="auto">The use case i am looking at is using ECS or some other mechanism to pass the IP of client making the query to the global load-balancer. This information could then be used by the global load-balancer in making proximity decisions when crafting its response.<div dir="auto">I.e. GLB sees 10.1.1.1 and returns a given IP but if it sees 10.2.2.2 the answer is different. </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Nov 11, 2017 5:31 AM, "Ray Bellis" <<a href="mailto:ray@isc.org">ray@isc.org</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 11/11/2017 04:50, Mukund Sivaraman wrote:<br>
> I'm not sure how ECS would be useful for load-balancing, as in the best<br>
> case scenario it would require one to control every client side to send<br>
> the client-subnet option.<br>
<br>
It would help if Ben provided more details about what he's trying to<br>
achieve.<br>
<br>
I do have a draft that I'm trying to get adopted at IETF to allow<br>
client-related information to be carried from load balancer to back-end<br>
server. It's not yet implemented in BIND, though:<br>
<br>
<<a href="https://tools.ietf.org/html/draft-bellis-dnsop-xpf-03" rel="noreferrer" target="_blank">https://tools.ietf.org/html/<wbr>draft-bellis-dnsop-xpf-03</a>><br>
<br>
Ray<br>
<br>
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