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: ippacket.rs
    path of file: ./repos/lora-mesh-rs/src/stack/message
    
    the code of the file until where you have to start completion: use packet::ip::v4::Packet;
use crate::stack::Frame;
use crate::stack::frame::{FrameHeader, ToFromFrame};
use crate::message::MessageType;
use std::io::ErrorKind;

/// Container for IP-level packets
#[derive(Clone, Debug)]
pub struct
    
    fn to_frame(&self, frameid: u8, sender: u8, route: Vec<u8>) -> Frame {
        // cast the route
        let route: Vec<u8> = route.clone().iter().map(|i| i.clone() as u8).collect();
        let routeoffset = route.len() as u8;

        // write the payload
        let payload: Vec<u8> = Vec::from(self.packet.as_ref());

        Frame::new(
            0i8 as u8,
            frameid,
            MessageType::IPPacket as u8,
            sender as u8,
            routeoffset as u8,
            route,
            payload
        )
    }