{ services.stubby = { roundRobinUpstreams = false; upstreamServers = let nextDnsId = "75e43d"; in '' - address_data: 45.90.28.0 tls_auth_name: "${nextDnsId}.dns1.nextdns.io" - address_data: 2a07:a8c0::0 tls_auth_name: "${nextDnsId}.dns1.nextdns.io" - address_data: 45.90.30.0 tls_auth_name: "${nextDnsId}.dns2.nextdns.io" - address_data: 2a07:a8c1::0 tls_auth_name: "${nextDnsId}.dns2.nextdns.io" ''; }; }