Pull request: 5035-slices-clone

Updates #5035.

Squashed commit of the following:

commit 9a5be90a347d4da08649927731b20fd5ecb90be2
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Oct 21 20:11:54 2022 +0300

    all: use slices.Clone, netip.AddrPort

internal/dhcpd/dhcpd.go

@@ -9,8 +9,8 @@ import (
 	"time"
 
 	"github.com/AdguardTeam/golibs/log"
-	"github.com/AdguardTeam/golibs/netutil"
 	"github.com/AdguardTeam/golibs/timeutil"
+	"golang.org/x/exp/slices"
 )
 
 const (
@@ -54,8 +54,8 @@ func (l *Lease) Clone() (clone *Lease) {
 	return &Lease{
 		Expiry:   l.Expiry,
 		Hostname: l.Hostname,
-		HWAddr:   netutil.CloneMAC(l.HWAddr),
-		IP:       netutil.CloneIP(l.IP),
+		HWAddr:   slices.Clone(l.HWAddr),
+		IP:       slices.Clone(l.IP),
 	}
 }
 

internal/dhcpd/dhcpd_unix_test.go

@@ -10,10 +10,10 @@ import (
 	"time"
 
 	"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
-	"github.com/AdguardTeam/golibs/netutil"
 	"github.com/AdguardTeam/golibs/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"golang.org/x/exp/slices"
 )
 
 func TestMain(m *testing.M) {
@@ -157,7 +157,7 @@ func TestV4Server_badRange(t *testing.T) {
 // cloneUDPAddr returns a deep copy of a.
 func cloneUDPAddr(a *net.UDPAddr) (clone *net.UDPAddr) {
 	return &net.UDPAddr{
-		IP:   netutil.CloneIP(a.IP),
+		IP:   slices.Clone(a.IP),
 		Port: a.Port,
 		Zone: a.Zone,
 	}

internal/dhcpd/v4_unix.go

@@ -1018,7 +1018,7 @@ func (s *v4Server) handle(req, resp *dhcpv4.DHCPv4) int {
 	}
 
 	if l != nil {
-		resp.YourIPAddr = netutil.CloneIP(l.IP)
+		resp.YourIPAddr = slices.Clone(l.IP)
 	}
 
 	s.updateOptions(req, resp)