Am 13.12.21 um 14:40 schrieb Daisuke HIGASHI: > Seems 0x20 problem with darkserv.net -- "use-caps-for-id: no" ? I thought, zonemaster check 0x20 issues these days. Obvisiouly I was wrong. Adding this to unbound.conf solved my issue: server: caps-exempt: "cdn.darkserv.net." Thanks for the hint Andreas