2016-12-20 3:07 GMT+02:00 Christian Hofstaedtler <z...@debian.org>: > pdns-backend-mysql
I suggest you file a bug against this package. It should define a per-database or per-table charset if it depends it to be of a certain kind. The maintainer of that app knows best that the suitable charset is, maybe ASCII for best performance? I somehow guess the index contains domain names, which are just fine with ASCII.