[dnsdist] orderedWrandUntag policy tagging example?

[Francesco Peeters]

The 'orderedWrandUntag' policy is described here: 
https://www.dnsdist.org/guides/serverselection.html?highlight=orderedwranduntag

However it does not tell me HOW to tag servers to be filtered out. The 
context suggests this should happen in the addResponseRule handling, as 
it refers to 'dr:restart()', which would only exist in there.

But it doesn't tell me what tag to use, or how to get the server name to 
put into that tag...

Does anyone have a functional example?

TIA & BRgds,
--
FP