You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: neigh.go
    path of file: ./repos/nff-go/packet
    
    the code of the file until where you have to start completion: // Copyright 2018 Intel Corporation.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package packet

import (
	"fmt"
	"sync"
	"time"

	"github.com/intel-go/nff-go/common"
	"github.com/intel-go/nff-go/types"
)

const (
	arpRequestsRepeatInterval = 1 * time.Second
	
    
func (table *NeighboursLookupTable) SendARPRequestForIPv4(ipv4, myIPv4Address types.IPv4Address, vlan uint16) {
	v, found := table.ipv4SentRequestTable.Load(ipv4)
	if found {
		lastsent := v.(time.Time)
		if time.Since(lastsent) < arpRequestsRepeatInterval {
			// Another ARP request has beep sent recently, we're still
			// waiting for reply
			return
		}
	}

	requestPacket, err := NewPacket()
	if err != nil {
		common.LogFatal(common.Debug, err)
	}

	InitARPRequestPacket(requestPacket, table.interfaceMAC, myIPv4Address, ipv4)

	if vlan != 0 {
		requestPacket.AddVLANTag(vlan)
	}

	requestPacket.SendPacket(table.portIndex)
	table.ipv4SentRequestTable.Store(ipv4, time.Now())
}