all: sync with master

internal/dhcpsvc/config.go

@@ -2,11 +2,11 @@ package dhcpsvc
 
 import (
 	"fmt"
+	"slices"
 	"time"
 
 	"github.com/AdguardTeam/golibs/netutil"
 	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
 )
 
 // Config is the configuration for the DHCP service.
@@ -19,6 +19,8 @@ type Config struct {
 	// clients' hostnames.
 	LocalDomainName string
 
+	// TODO(e.burkov):  Add DB path.
+
 	// ICMPTimeout is the timeout for checking another DHCP server's presence.
 	ICMPTimeout time.Duration
 
@@ -68,12 +70,6 @@ func (conf *Config) Validate() (err error) {
 	return nil
 }
 
-// newMustErr returns an error that indicates that valName must be as must
-// describes.
-func newMustErr(valName, must string, val fmt.Stringer) (err error) {
-	return fmt.Errorf("%s %s must %s", valName, val, must)
-}
-
 // validate returns an error in ic, if any.
 func (ic *InterfaceConfig) validate() (err error) {
 	if ic == nil {