all: sync with master

internal/dnsforward/config.go

@@ -121,6 +121,7 @@ type FilteringConfig struct {
 	EnableDNSSEC           bool     `yaml:"enable_dnssec"`      // Set AD flag in outcoming DNS request
 	EnableEDNSClientSubnet bool     `yaml:"edns_client_subnet"` // Enable EDNS Client Subnet option
 	MaxGoroutines          uint32   `yaml:"max_goroutines"`     // Max. number of parallel goroutines for processing incoming requests
+	HandleDDR              bool     `yaml:"handle_ddr"`         // Handle DDR requests
 
 	// IpsetList is the ipset configuration that allows AdGuard Home to add
 	// IP addresses of the specified domain names to an ipset list.  Syntax:
@@ -151,7 +152,7 @@ type TLSConfig struct {
 	PrivateKeyData       []byte `yaml:"-" json:"-"`
 
 	// ServerName is the hostname of the server.  Currently, it is only being
-	// used for ClientID checking.
+	// used for ClientID checking and Discovery of Designated Resolvers (DDR).
 	ServerName string `yaml:"-" json:"-"`
 
 	cert tls.Certificate