import pyroute2
import pydhcplib.dhcp as dhcp
import socket

def create_pppoe_interface():
    ip = pyroute2.IPRoute()
    idx = ip.link_lookup(ifname='ppp0')
    if not idx:
        ip.link('add', ifname='ppp0', kind='pppoe')
        idx = ip.link_lookup(ifname='ppp0')
        ip.addr('add', index=idx[0], address='0.0.0.0', prefixlen=32)

def handle_dhcp(packet):
    if packet.options[0][1] == 3:  # DHCP Discover
        print("Received DHCP Discover")
        hw_addr = packet.chaddr
        dhcp_offer = dhcp.DhcpPacket(packet)
        dhcp_offer.SetOption("yiaddr", "192.168.1.100")  # Example IP address
        dhcp_offer.SetOption("subnet_mask", "255.255.255.0")
        dhcp_offer.SetOption("router", "192.168.1.1")  # Example gateway
        dhcp_offer.SetOption("dns_server", "8.8.8.8")  # Example DNS server
        dhcp_offer.SetOption("lease_time", 86400)  # Example lease time
        dhcp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        dhcp_sock.sendto(dhcp_offer.GetPacket(), ('0.0.0.0', 68))
        print("Sent DHCP Offer")

create_pppoe_interface()

server = dhcp.DhcpServer(iface='ppp0', listenIP="0.0.0.0", serverIP="192.168.1.1")
server.BindToAddress(('0.0.0.0', 67))
server.AddCustomAction(3, handle_dhcp)
server.Start()