[dnsdist] Add ECS to response

[Casey Deccio]

Hello!

I'm wondering if it is possible to add an arbitrary ECS value to a response.  I've poked around through the docs, but it wasn't immediately clear how that might be done.  I did try:

addResponseAction(AllRule(), SetECSAction('0.0.0.0/0', '::/0'))

But SetECSAction() is only for queries, not responses.

Thanks!
Casey