IP_ADAPTER_PREFIX_XP

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct SOCKET_ADDRESS
{
    public IntPtr lpSockaddr;
    public int iSockaddrLength;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct IP_ADAPTER_PREFIX_XP
{
    public _Anonymous_e__Union Anonymous;
    public IntPtr Next;
    public SOCKET_ADDRESS Address;
    public uint PrefixLength;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure SOCKET_ADDRESS
    Public lpSockaddr As IntPtr
    Public iSockaddrLength As Integer
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure IP_ADAPTER_PREFIX_XP
    Public Anonymous As _Anonymous_e__Union
    Public Next As IntPtr
    Public Address As SOCKET_ADDRESS
    Public PrefixLength As UInteger
End Structure

import ctypes
from ctypes import wintypes

class SOCKET_ADDRESS(ctypes.Structure):
    _fields_ = [
        ("lpSockaddr", ctypes.c_void_p),
        ("iSockaddrLength", ctypes.c_int),
    ]

class IP_ADAPTER_PREFIX_XP(ctypes.Structure):
    _fields_ = [
        ("Anonymous", _Anonymous_e__Union),
        ("Next", ctypes.c_void_p),
        ("Address", SOCKET_ADDRESS),
        ("PrefixLength", wintypes.DWORD),
    ]

#[repr(C)]
pub struct SOCKET_ADDRESS {
    pub lpSockaddr: *mut core::ffi::c_void,
    pub iSockaddrLength: i32,
}

#[repr(C)]
pub struct IP_ADAPTER_PREFIX_XP {
    pub Anonymous: _Anonymous_e__Union,
    pub Next: *mut core::ffi::c_void,
    pub Address: SOCKET_ADDRESS,
    pub PrefixLength: u32,
}

import "golang.org/x/sys/windows"

type SOCKET_ADDRESS struct {
	lpSockaddr uintptr
	iSockaddrLength int32
}

type IP_ADAPTER_PREFIX_XP struct {
	Anonymous _Anonymous_e__Union
	Next uintptr
	Address SOCKET_ADDRESS
	PrefixLength uint32
}

type
  SOCKET_ADDRESS = record
    lpSockaddr: Pointer;
    iSockaddrLength: Integer;
  end;

  IP_ADAPTER_PREFIX_XP = record
    Anonymous: _Anonymous_e__Union;
    Next: Pointer;
    Address: SOCKET_ADDRESS;
    PrefixLength: DWORD;
  end;

const SOCKET_ADDRESS = extern struct {
    lpSockaddr: ?*anyopaque,
    iSockaddrLength: i32,
};

const IP_ADAPTER_PREFIX_XP = extern struct {
    Anonymous: _Anonymous_e__Union,
    Next: ?*anyopaque,
    Address: SOCKET_ADDRESS,
    PrefixLength: u32,
};

type
  SOCKET_ADDRESS {.bycopy.} = object
    lpSockaddr: pointer
    iSockaddrLength: int32

  IP_ADAPTER_PREFIX_XP {.bycopy.} = object
    Anonymous: _Anonymous_e__Union
    Next: pointer
    Address: SOCKET_ADDRESS
    PrefixLength: uint32

struct SOCKET_ADDRESS
{
    void* lpSockaddr;
    int iSockaddrLength;
}

struct IP_ADAPTER_PREFIX_XP
{
    _Anonymous_e__Union Anonymous;
    void* Next;
    SOCKET_ADDRESS Address;
    uint PrefixLength;
}