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: network_monitor.rs
    path of file: ./repos/mullvadvpn-app/test/test-manager/src
    
    the code of the file until where you have to start completion: use std::{
    future::poll_fn,
    net::{IpAddr, SocketAddr},
    time::Duration,
};

use futures::{channel::oneshot, pin_mut, StreamExt};
pub use pcap::Direction;
use pcap::PacketCodec;
use pnet_packet::{
    ethernet::EtherTypes, ip::IpNextHeaderProtocol, ipv4::Ipv4Packet, ipv6::Ipv6Packet,
    tcp::TcpPacket, udp::UdpPacket, Packet,
};

pub use pnet_packet::ip::IpNextHeaderProtocols as IpHeaderProtocols;

use crate::tests::config
    
    fn parse_ipv6(payload: &[u8]) -> Option<ParsedPacket> {
        let packet = Ipv6Packet::new(payload).or_else(|| {
            log::error!("invalid v6 packet");
            None
        })?;

        let mut source = SocketAddr::new(IpAddr::V6(packet.get_source()), 0);
        let mut destination = SocketAddr::new(IpAddr::V6(packet.get_destination()), 0);

        let protocol = packet.get_next_header();
        match protocol {
            IpHeaderProtocols::Tcp => {
                let seg = TcpPacket::new(packet.payload()).or_else(|| {
                    log::error!("invalid TCP segment");
                    None
                })?;
                source.set_port(seg.get_source());
                destination.set_port(seg.get_destination());
            }
            IpHeaderProtocols::Udp => {
                let seg = UdpPacket::new(packet.payload()).or_else(|| {
                    log::error!("invalid UDP fragment");
                    None
                })?;
                source.set_port(seg.get_source());
                destination.set_port(seg.get_destination());
            }
            IpHeaderProtocols::Icmpv6 => {}
            proto => log::debug!("ignoring v6 packet, transport/protocol type {proto}"),
        }

        Some(ParsedPacket {
            source,
            destination,
            protocol,
        })
    }