diff --git a/arp/frame.go b/arp/frame.go
index 6b9f251..ea92adb 100644
--- a/arp/frame.go
+++ b/arp/frame.go
@@ -7,8 +7,8 @@ import (
 	"net"
 	"net/netip"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/ethernet"
-	"github.com/soypat/lneto/lneto2"
 )
 
 // NewARPFrame returns a ARPFrame with data set to buf.
@@ -135,7 +135,7 @@ func (afrm Frame) SwapTargetSender() {
 //
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (afrm Frame) ValidateSize(v *lneto2.Validator) {
+func (afrm Frame) ValidateSize(v *lneto.Validator) {
 	_, hlen := afrm.Hardware()
 	_, ilen := afrm.Protocol()
 	minLen := 8 + 2*(hlen+ilen)
diff --git a/arp/handler.go b/arp/handler.go
index 9149c02..4ac7a6a 100644
--- a/arp/handler.go
+++ b/arp/handler.go
@@ -4,8 +4,8 @@ import (
 	"bytes"
 	"errors"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/ethernet"
-	"github.com/soypat/lneto/lneto2"
 )
 
 type Handler struct {
@@ -133,7 +133,7 @@ func (c *Handler) Recv(b []byte) error {
 	if err != nil {
 		return err
 	}
-	var vld lneto2.Validator
+	var vld lneto.Validator
 	afrm.ValidateSize(&vld)
 	if vld.HasError() {
 		return vld.Err()
diff --git a/lneto2/crc.go b/crc.go
similarity index 99%
rename from lneto2/crc.go
rename to crc.go
index 8e71af4..9854362 100644
--- a/lneto2/crc.go
+++ b/crc.go
@@ -1,4 +1,4 @@
-package lneto2
+package lneto
 
 import (
 	"encoding/binary"
diff --git a/lneto2/definitions.go b/definitions.go
similarity index 99%
rename from lneto2/definitions.go
rename to definitions.go
index 7f04226..7ea4524 100644
--- a/lneto2/definitions.go
+++ b/definitions.go
@@ -1,4 +1,4 @@
-package lneto2
+package lneto
 
 //go:generate stringer -type=IPProto -linecomment -output stringers.go .
 
diff --git a/ethernet/frame.go b/ethernet/frame.go
index 994606d..a2ca59f 100644
--- a/ethernet/frame.go
+++ b/ethernet/frame.go
@@ -4,7 +4,7 @@ import (
 	"encoding/binary"
 	"errors"
 
-	"github.com/soypat/lneto/lneto2"
+	"github.com/soypat/lneto"
 )
 
 // NewFrame returns a EthFrame with data set to buf.
@@ -120,7 +120,7 @@ var (
 
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (efrm Frame) ValidateSize(v *lneto2.Validator) {
+func (efrm Frame) ValidateSize(v *lneto.Validator) {
 	sz := efrm.EtherTypeOrSize()
 	if sz.IsSize() && len(efrm.buf) < int(sz) {
 		v.AddError(errShort)
diff --git a/examples/stack/main.go b/examples/stack/main.go
index 7423a85..65ad8a4 100644
--- a/examples/stack/main.go
+++ b/examples/stack/main.go
@@ -15,12 +15,12 @@ import (
 	"os"
 	"time"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/arp"
 	"github.com/soypat/lneto/ethernet"
 	"github.com/soypat/lneto/internal"
 	"github.com/soypat/lneto/ipv4"
 	"github.com/soypat/lneto/ipv6"
-	"github.com/soypat/lneto/lneto2"
 	"github.com/soypat/lneto/tcp"
 )
 
@@ -203,7 +203,7 @@ func (ls *LinkStack) RecvEth(ethFrame []byte) (err error) {
 	if !efrm.IsBroadcast() && ls.mac != *dstaddr {
 		return fmt.Errorf("incoming %s mismatch hwaddr %s", etype.String(), net.HardwareAddr(dstaddr[:]).String())
 	}
-	var vld lneto2.Validator
+	var vld lneto.Validator
 	efrm.ValidateSize(&vld)
 	if err := vld.Err(); err != nil {
 		return err
@@ -245,7 +245,7 @@ func (ls *LinkStack) HandleEth(dst []byte) (n int, err error) {
 
 type IPv4Stack struct {
 	ip        [4]byte
-	validator lneto2.Validator
+	validator lneto.Validator
 	handlers  []handler
 	logger
 }
@@ -315,7 +315,7 @@ func (is *IPv4Stack) Handle(ethFrame []byte, ipOff int) (int, error) {
 	ifrm.SetToS(0)
 	for i := range is.handlers {
 		h := &is.handlers[i]
-		proto := lneto2.IPProto(h.proto)
+		proto := lneto.IPProto(h.proto)
 		ifrm.SetProtocol(proto)
 		if len(h.raddr) == 4 {
 			copy(ifrm.DestinationAddr()[:], h.raddr)
@@ -336,7 +336,7 @@ func (is *IPv4Stack) Handle(ethFrame []byte, ipOff int) (int, error) {
 			ifrm.SetFlags(dontFrag)
 			ifrm.SetTTL(64)
 			ifrm.SetCRC(ifrm.CalculateHeaderCRC())
-			if ifrm.Protocol() == lneto2.IPProtoTCP {
+			if ifrm.Protocol() == lneto.IPProtoTCP {
 				tfrm, _ := tcp.NewFrame(ifrm.Payload())
 				is.info("IPv4Stack:send", slog.String("ip", ifrm.String()), slog.String("tcp", tfrm.String()))
 			}
@@ -347,12 +347,12 @@ func (is *IPv4Stack) Handle(ethFrame []byte, ipOff int) (int, error) {
 }
 
 type TCPStack struct {
-	validator lneto2.Validator
+	validator lneto.Validator
 	handlers  []handler
 	logger
 }
 
-func (ts *TCPStack) Protocol() uint32 { return uint32(lneto2.IPProtoTCP) }
+func (ts *TCPStack) Protocol() uint32 { return uint32(lneto.IPProtoTCP) }
 
 func (ts *TCPStack) Register(h Handler, lport uint16) error {
 	if lport == 0 {
@@ -468,7 +468,7 @@ type TCPPort struct {
 	handler tcp.Handler
 }
 
-func (tp *TCPPort) Protocol() uint32 { return uint32(lneto2.IPProtoTCP) }
+func (tp *TCPPort) Protocol() uint32 { return uint32(lneto.IPProtoTCP) }
 
 func (tp *TCPPort) Recv(tcpFrame []byte, off int) error {
 	if off != 0 {
@@ -582,7 +582,7 @@ func (h *HTTPTap) Close() error { return nil }
 func tcpChecksum(ipFrame []byte, tcpPayload int) uint16 {
 	version := ipFrame[0] >> 4
 	var tfrm tcp.Frame
-	var crc lneto2.CRC791
+	var crc lneto.CRC791
 	switch version {
 	case 4:
 		ifrm, _ := ipv4.NewFrame(ipFrame)
diff --git a/internal/ltesto/ltesto.go b/internal/ltesto/ltesto.go
index 5bbcd4d..2facfef 100644
--- a/internal/ltesto/ltesto.go
+++ b/internal/ltesto/ltesto.go
@@ -5,9 +5,9 @@ import (
 	"math"
 	"math/rand"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/ethernet"
 	"github.com/soypat/lneto/ipv4"
-	"github.com/soypat/lneto/lneto2"
 	"github.com/soypat/lneto/tcp"
 )
 
@@ -91,7 +91,7 @@ func (gen *PacketGen) AppendRandomIPv4TCPPacket(dst []byte, rng *rand.Rand, seg
 	ifrm.SetID(uint16(rng.Uint32()))
 	ifrm.SetFlags(0x4001) // Don't fragment.
 	ifrm.SetTTL(64)
-	ifrm.SetProtocol(lneto2.IPProtoTCP)
+	ifrm.SetProtocol(lneto.IPProtoTCP)
 	*ifrm.SourceAddr() = gen.SrcIPv4
 	*ifrm.DestinationAddr() = gen.DstIPv4
 	ifrm.SetCRC(ifrm.CalculateHeaderCRC())
@@ -122,7 +122,7 @@ func (gen *PacketGen) AppendRandomIPv4TCPPacket(dst []byte, rng *rand.Rand, seg
 	// Set Variable section of data.
 	copy(ifrm.Options(), ipOpts)
 	copy(tfrm.Options(), tcpOpts)
-	var crc lneto2.CRC791
+	var crc lneto.CRC791
 	ifrm.CRCWriteTCPPseudo(&crc)
 	tfrm.CRCWrite(&crc)
 
@@ -141,7 +141,7 @@ func (gen *PacketGen) AppendRandomIPv4TCPPacket(dst []byte, rng *rand.Rand, seg
 	case len(tcpPayload) > 0 && firstPayloadByte != tcpPayload[0]:
 		panic("TCP options overwrite payload")
 	}
-	var vld lneto2.Validator
+	var vld lneto.Validator
 	efrm.ValidateSize(&vld)
 	if err = vld.Err(); err != nil {
 		panic(err)
diff --git a/internet/basicstack.go b/internet/basicstack.go
new file mode 100644
index 0000000..cd9f081
--- /dev/null
+++ b/internet/basicstack.go
@@ -0,0 +1,4 @@
+package internet
+
+type StackBasic struct {
+}
diff --git a/ipv4/frame.go b/ipv4/frame.go
index cc93e34..42a5032 100644
--- a/ipv4/frame.go
+++ b/ipv4/frame.go
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"net/netip"
 
-	"github.com/soypat/lneto/lneto2"
+	"github.com/soypat/lneto"
 )
 
 // NewIPv4Frame returns a new IPv4Frame with data set to buf.
@@ -113,10 +113,10 @@ func (ifrm Frame) SetTTL(ttl uint8) { ifrm.buf[8] = ttl }
 
 // Protocol field defines the protocol used in the data portion of the IP datagram. TCP is 6, UDP is 17.
 // See [IPProto].
-func (ifrm Frame) Protocol() lneto2.IPProto { return lneto2.IPProto(ifrm.buf[9]) }
+func (ifrm Frame) Protocol() lneto.IPProto { return lneto.IPProto(ifrm.buf[9]) }
 
-// SetProtocol sets protocol field. See [Frame.Protocol] and [lneto2.IPProto].
-func (ifrm Frame) SetProtocol(proto lneto2.IPProto) { ifrm.buf[9] = uint8(proto) }
+// SetProtocol sets protocol field. See [Frame.Protocol] and [lneto.IPProto].
+func (ifrm Frame) SetProtocol(proto lneto.IPProto) { ifrm.buf[9] = uint8(proto) }
 
 // CRC returns the cyclic-redundancy-check (checksum) field of the IPv4 header.
 func (ifrm Frame) CRC() uint16 {
@@ -130,20 +130,20 @@ func (ifrm Frame) SetCRC(cs uint16) {
 
 // CalculateHeaderCRC calculates the CRC for this IPv4 frame.
 func (ifrm Frame) CalculateHeaderCRC() uint16 {
-	var crc lneto2.CRC791
+	var crc lneto.CRC791
 	crc.Write(ifrm.buf[0:10])
 	crc.Write(ifrm.buf[12:20])
 	return crc.Sum16()
 }
 
-func (ifrm Frame) CRCWriteTCPPseudo(crc *lneto2.CRC791) {
+func (ifrm Frame) CRCWriteTCPPseudo(crc *lneto.CRC791) {
 	crc.Write(ifrm.SourceAddr()[:])
 	crc.Write(ifrm.DestinationAddr()[:])
 	crc.AddUint16(ifrm.TotalLength() - 4*uint16(ifrm.ihl()))
 	crc.AddUint16(uint16(ifrm.Protocol()))
 }
 
-func (ifrm Frame) CRCWriteUDPPseudo(crc *lneto2.CRC791) {
+func (ifrm Frame) CRCWriteUDPPseudo(crc *lneto.CRC791) {
 	crc.Write(ifrm.SourceAddr()[:])
 	crc.Write(ifrm.DestinationAddr()[:])
 	crc.AddUint16(uint16(ifrm.Protocol()))
@@ -195,7 +195,7 @@ var (
 
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (ifrm Frame) ValidateSize(v *lneto2.Validator) {
+func (ifrm Frame) ValidateSize(v *lneto.Validator) {
 	ihl := ifrm.ihl()
 	tl := ifrm.TotalLength()
 	if tl < sizeHeader {
@@ -210,13 +210,13 @@ func (ifrm Frame) ValidateSize(v *lneto2.Validator) {
 }
 
 // ValidateExceptCRC checks for invalid frame values but does not check CRC.
-func (ifrm Frame) ValidateExceptCRC(v *lneto2.Validator) {
+func (ifrm Frame) ValidateExceptCRC(v *lneto.Validator) {
 	ifrm.ValidateSize(v)
 	flags := ifrm.Flags()
 	if ifrm.version() != 4 {
 		v.AddError(errBadVersion)
 	}
-	if v.Flags()&lneto2.ValidateEvilBit != 0 && flags.IsEvil() {
+	if v.Flags()&lneto.ValidateEvilBit != 0 && flags.IsEvil() {
 		v.AddError(errEvil)
 	}
 }
diff --git a/ipv6/frame.go b/ipv6/frame.go
index 1e643f5..970bede 100644
--- a/ipv6/frame.go
+++ b/ipv6/frame.go
@@ -4,7 +4,7 @@ import (
 	"encoding/binary"
 	"errors"
 
-	"github.com/soypat/lneto/lneto2"
+	"github.com/soypat/lneto"
 )
 
 // NewIPv6Frame returns a new IPv6Frame with data set to buf.
@@ -67,12 +67,12 @@ func (i6frm Frame) SetPayloadLength(pl uint16) {
 
 // NextHeader returns the Next Header field of the IPv6 header which usually specifies the transport layer
 // protocol used by packet's payload.
-func (i6frm Frame) NextHeader() lneto2.IPProto {
-	return lneto2.IPProto(i6frm.buf[6])
+func (i6frm Frame) NextHeader() lneto.IPProto {
+	return lneto.IPProto(i6frm.buf[6])
 }
 
 // SetNextHeader sets the Next Header (protocol) field of the IPv6 header. See [Frame.NextHeader].
-func (i6frm Frame) SetNextHeader(proto lneto2.IPProto) {
+func (i6frm Frame) SetNextHeader(proto lneto.IPProto) {
 	i6frm.buf[6] = uint8(proto)
 }
 
@@ -98,7 +98,7 @@ func (i6frm Frame) DestinationAddr() *[16]byte {
 	return (*[16]byte)(i6frm.buf[24:40])
 }
 
-func (i6frm Frame) CRCWritePseudo(crc *lneto2.CRC791) {
+func (i6frm Frame) CRCWritePseudo(crc *lneto.CRC791) {
 	crc.Write(i6frm.SourceAddr()[:])
 	crc.Write(i6frm.DestinationAddr()[:])
 	crc.AddUint32(uint32(i6frm.PayloadLength()))
@@ -123,7 +123,7 @@ var (
 
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (i6frm Frame) ValidateSize(v *lneto2.Validator) {
+func (i6frm Frame) ValidateSize(v *lneto.Validator) {
 	tl := i6frm.PayloadLength()
 	if int(tl)+sizeHeader > len(i6frm.RawData()) {
 		v.AddError(errShortFrame)
diff --git a/lneto2/lneto_test.go b/lneto_test.go
similarity index 99%
rename from lneto2/lneto_test.go
rename to lneto_test.go
index 19084c1..c21aa77 100644
--- a/lneto2/lneto_test.go
+++ b/lneto_test.go
@@ -1,4 +1,4 @@
-package lneto2_test
+package lneto_test
 
 import (
 	"bytes"
diff --git a/lneto2/stringers.go b/stringers.go
similarity index 99%
rename from lneto2/stringers.go
rename to stringers.go
index e4081c9..c605d6b 100644
--- a/lneto2/stringers.go
+++ b/stringers.go
@@ -1,6 +1,6 @@
 // Code generated by "stringer -type=IPProto -linecomment -output stringers.go ."; DO NOT EDIT.
 
-package lneto2
+package lneto
 
 import "strconv"
 
diff --git a/tcp/frame.go b/tcp/frame.go
index f917693..f396b52 100644
--- a/tcp/frame.go
+++ b/tcp/frame.go
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"math"
 
-	"github.com/soypat/lneto/lneto2"
+	"github.com/soypat/lneto"
 )
 
 const (
@@ -140,7 +140,7 @@ func (tfrm Frame) Segment(payloadSize int) Segment {
 	}
 }
 
-func (tfrm Frame) CRCWrite(crc *lneto2.CRC791) {
+func (tfrm Frame) CRCWrite(crc *lneto.CRC791) {
 	// Write excluding CRC
 	crc.Write(tfrm.buf[:16])
 	crc.Write(tfrm.buf[18:])
@@ -192,14 +192,14 @@ var (
 	errZeroSrcPort = errors.New("TCP zero source port")
 )
 
-// func (tfrm Frame) Validate(v *lneto2.Validator) {
+// func (tfrm Frame) Validate(v *lneto.Validator) {
 // tfrm.ValidateSize(v)
 // tfrm.ValidateExceptCRC(v)
 // }
 
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (tfrm Frame) ValidateSize(v *lneto2.Validator) {
+func (tfrm Frame) ValidateSize(v *lneto.Validator) {
 	off := tfrm.HeaderLength()
 	if off < sizeHeaderTCP {
 		v.AddBitPosErr(12*8, 4, errBadTCPOff)
@@ -209,7 +209,7 @@ func (tfrm Frame) ValidateSize(v *lneto2.Validator) {
 	}
 }
 
-func (tfrm Frame) ValidateExceptCRC(v *lneto2.Validator) {
+func (tfrm Frame) ValidateExceptCRC(v *lneto.Validator) {
 	tfrm.ValidateSize(v)
 	if tfrm.DestinationPort() == 0 {
 		v.AddBitPosErr(2*8, 16, errZeroDstPort)
diff --git a/tcp/handler.go b/tcp/handler.go
index 9879548..a00a3cd 100644
--- a/tcp/handler.go
+++ b/tcp/handler.go
@@ -6,8 +6,8 @@ import (
 
 	"log/slog"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/internal"
-	"github.com/soypat/lneto/lneto2"
 )
 
 var (
@@ -24,7 +24,7 @@ type Handler struct {
 	bufTx ringTx
 	bufRx internal.Ring
 	logger
-	validator  lneto2.Validator
+	validator  lneto.Validator
 	localPort  uint16
 	remotePort uint16
 	// connid is a conenction counter that is incremented each time a new
diff --git a/tcp/tcp_test.go b/tcp/tcp_test.go
index bee92a6..9c59d91 100644
--- a/tcp/tcp_test.go
+++ b/tcp/tcp_test.go
@@ -5,9 +5,9 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/soypat/lneto"
 	"github.com/soypat/lneto/ethernet"
 	"github.com/soypat/lneto/ipv4"
-	"github.com/soypat/lneto/lneto2"
 	"github.com/soypat/lneto/tcp"
 )
 
@@ -586,7 +586,7 @@ func TestExchange_helloworld_client(t *testing.T) {
 }
 
 func parseSegment(t *testing.T, b []byte) (tcp.Segment, []byte) {
-	var vld lneto2.Validator
+	var vld lneto.Validator
 	t.Helper()
 	efrm, err := ethernet.NewFrame(b)
 	if err != nil {
diff --git a/udp/frame.go b/udp/frame.go
index 80fd090..878d558 100644
--- a/udp/frame.go
+++ b/udp/frame.go
@@ -4,7 +4,7 @@ import (
 	"encoding/binary"
 	"errors"
 
-	"github.com/soypat/lneto/lneto2"
+	"github.com/soypat/lneto"
 )
 
 // NewUDPFrame returns a new UDPFrame with data set to buf.
@@ -80,7 +80,7 @@ func (ufrm Frame) Payload() []byte {
 }
 
 // func (ufrm Frame) CalculateIPv4Checksum(ifrm IPv4Frame) uint16 {
-// 	var crc lneto2.CRC791
+// 	var crc lneto.CRC791
 // 	ifrm.crcWriteUDPPseudo(&crc)
 // 	crc.AddUint16(ufrm.Length())
 // 	crc.AddUint16(ufrm.SourcePort())
@@ -91,7 +91,7 @@ func (ufrm Frame) Payload() []byte {
 // }
 
 // func (ufrm Frame) CalculateIPv6Checksum(ifrm IPv6Frame) uint16 {
-// 	var crc lneto2.CRC791
+// 	var crc lneto.CRC791
 // 	ifrm.crcWritePseudo(&crc)
 // 	crc.AddUint16(ufrm.SourcePort())
 // 	crc.AddUint16(ufrm.DestinationPort())
@@ -118,7 +118,7 @@ var (
 
 // ValidateSize checks the frame's size fields and compares with the actual buffer
 // the frame. It returns a non-nil error on finding an inconsistency.
-func (ufrm Frame) ValidateSize(v *lneto2.Validator) {
+func (ufrm Frame) ValidateSize(v *lneto.Validator) {
 	ul := ufrm.Length()
 	if ul < sizeHeader {
 		v.AddError(errBadLen)
diff --git a/lneto2/validation.go b/validation.go
similarity index 99%
rename from lneto2/validation.go
rename to validation.go
index 50db57a..8a302ec 100644
--- a/lneto2/validation.go
+++ b/validation.go
@@ -1,4 +1,4 @@
-package lneto2
+package lneto
 
 import (
 	"errors"