When NOTIMPL or FORMERR is encountered, disable QNAME minimization
first, and disable EDNS in a second round. This adds some latency (one more roundtrip), but it's safer to not drop EDNS0 on a first failure.
first, and disable EDNS in a second round. This adds some latency (one more roundtrip), but it's safer to not drop EDNS0 on a first failure.