RASIKEV2_PROJECTION_INFO

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct IN_ADDR
{
    public _S_un_e__Union S_un;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct IN6_ADDR
{
    public _u_e__Union u;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct RASIKEV2_PROJECTION_INFO
{
    public uint dwIPv4NegotiationError;
    public IN_ADDR ipv4Address;
    public IN_ADDR ipv4ServerAddress;
    public uint dwIPv6NegotiationError;
    public IN6_ADDR ipv6Address;
    public IN6_ADDR ipv6ServerAddress;
    public uint dwPrefixLength;
    public uint dwAuthenticationProtocol;
    public uint dwEapTypeId;
    public uint dwFlags;
    public uint dwEncryptionMethod;
    public uint numIPv4ServerAddresses;
    public IntPtr ipv4ServerAddresses;
    public uint numIPv6ServerAddresses;
    public IntPtr ipv6ServerAddresses;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure IN_ADDR
    Public S_un As _S_un_e__Union
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure IN6_ADDR
    Public u As _u_e__Union
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure RASIKEV2_PROJECTION_INFO
    Public dwIPv4NegotiationError As UInteger
    Public ipv4Address As IN_ADDR
    Public ipv4ServerAddress As IN_ADDR
    Public dwIPv6NegotiationError As UInteger
    Public ipv6Address As IN6_ADDR
    Public ipv6ServerAddress As IN6_ADDR
    Public dwPrefixLength As UInteger
    Public dwAuthenticationProtocol As UInteger
    Public dwEapTypeId As UInteger
    Public dwFlags As UInteger
    Public dwEncryptionMethod As UInteger
    Public numIPv4ServerAddresses As UInteger
    Public ipv4ServerAddresses As IntPtr
    Public numIPv6ServerAddresses As UInteger
    Public ipv6ServerAddresses As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class IN_ADDR(ctypes.Structure):
    _fields_ = [
        ("S_un", _S_un_e__Union),
    ]

class IN6_ADDR(ctypes.Structure):
    _fields_ = [
        ("u", _u_e__Union),
    ]

class RASIKEV2_PROJECTION_INFO(ctypes.Structure):
    _fields_ = [
        ("dwIPv4NegotiationError", wintypes.DWORD),
        ("ipv4Address", IN_ADDR),
        ("ipv4ServerAddress", IN_ADDR),
        ("dwIPv6NegotiationError", wintypes.DWORD),
        ("ipv6Address", IN6_ADDR),
        ("ipv6ServerAddress", IN6_ADDR),
        ("dwPrefixLength", wintypes.DWORD),
        ("dwAuthenticationProtocol", wintypes.DWORD),
        ("dwEapTypeId", wintypes.DWORD),
        ("dwFlags", wintypes.DWORD),
        ("dwEncryptionMethod", wintypes.DWORD),
        ("numIPv4ServerAddresses", wintypes.DWORD),
        ("ipv4ServerAddresses", ctypes.c_void_p),
        ("numIPv6ServerAddresses", wintypes.DWORD),
        ("ipv6ServerAddresses", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct IN_ADDR {
    pub S_un: _S_un_e__Union,
}

#[repr(C)]
pub struct IN6_ADDR {
    pub u: _u_e__Union,
}

#[repr(C)]
pub struct RASIKEV2_PROJECTION_INFO {
    pub dwIPv4NegotiationError: u32,
    pub ipv4Address: IN_ADDR,
    pub ipv4ServerAddress: IN_ADDR,
    pub dwIPv6NegotiationError: u32,
    pub ipv6Address: IN6_ADDR,
    pub ipv6ServerAddress: IN6_ADDR,
    pub dwPrefixLength: u32,
    pub dwAuthenticationProtocol: u32,
    pub dwEapTypeId: u32,
    pub dwFlags: u32,
    pub dwEncryptionMethod: u32,
    pub numIPv4ServerAddresses: u32,
    pub ipv4ServerAddresses: *mut core::ffi::c_void,
    pub numIPv6ServerAddresses: u32,
    pub ipv6ServerAddresses: *mut core::ffi::c_void,
}

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

type IN_ADDR struct {
	S_un _S_un_e__Union
}

type IN6_ADDR struct {
	u _u_e__Union
}

type RASIKEV2_PROJECTION_INFO struct {
	dwIPv4NegotiationError uint32
	ipv4Address IN_ADDR
	ipv4ServerAddress IN_ADDR
	dwIPv6NegotiationError uint32
	ipv6Address IN6_ADDR
	ipv6ServerAddress IN6_ADDR
	dwPrefixLength uint32
	dwAuthenticationProtocol uint32
	dwEapTypeId uint32
	dwFlags uint32
	dwEncryptionMethod uint32
	numIPv4ServerAddresses uint32
	ipv4ServerAddresses uintptr
	numIPv6ServerAddresses uint32
	ipv6ServerAddresses uintptr
}

type
  IN_ADDR = record
    S_un: _S_un_e__Union;
  end;

  IN6_ADDR = record
    u: _u_e__Union;
  end;

  RASIKEV2_PROJECTION_INFO = record
    dwIPv4NegotiationError: DWORD;
    ipv4Address: IN_ADDR;
    ipv4ServerAddress: IN_ADDR;
    dwIPv6NegotiationError: DWORD;
    ipv6Address: IN6_ADDR;
    ipv6ServerAddress: IN6_ADDR;
    dwPrefixLength: DWORD;
    dwAuthenticationProtocol: DWORD;
    dwEapTypeId: DWORD;
    dwFlags: DWORD;
    dwEncryptionMethod: DWORD;
    numIPv4ServerAddresses: DWORD;
    ipv4ServerAddresses: Pointer;
    numIPv6ServerAddresses: DWORD;
    ipv6ServerAddresses: Pointer;
  end;

const IN_ADDR = extern struct {
    S_un: _S_un_e__Union,
};

const IN6_ADDR = extern struct {
    u: _u_e__Union,
};

const RASIKEV2_PROJECTION_INFO = extern struct {
    dwIPv4NegotiationError: u32,
    ipv4Address: IN_ADDR,
    ipv4ServerAddress: IN_ADDR,
    dwIPv6NegotiationError: u32,
    ipv6Address: IN6_ADDR,
    ipv6ServerAddress: IN6_ADDR,
    dwPrefixLength: u32,
    dwAuthenticationProtocol: u32,
    dwEapTypeId: u32,
    dwFlags: u32,
    dwEncryptionMethod: u32,
    numIPv4ServerAddresses: u32,
    ipv4ServerAddresses: ?*anyopaque,
    numIPv6ServerAddresses: u32,
    ipv6ServerAddresses: ?*anyopaque,
};

type
  IN_ADDR {.bycopy.} = object
    S_un: _S_un_e__Union

  IN6_ADDR {.bycopy.} = object
    u: _u_e__Union

  RASIKEV2_PROJECTION_INFO {.bycopy.} = object
    dwIPv4NegotiationError: uint32
    ipv4Address: IN_ADDR
    ipv4ServerAddress: IN_ADDR
    dwIPv6NegotiationError: uint32
    ipv6Address: IN6_ADDR
    ipv6ServerAddress: IN6_ADDR
    dwPrefixLength: uint32
    dwAuthenticationProtocol: uint32
    dwEapTypeId: uint32
    dwFlags: uint32
    dwEncryptionMethod: uint32
    numIPv4ServerAddresses: uint32
    ipv4ServerAddresses: pointer
    numIPv6ServerAddresses: uint32
    ipv6ServerAddresses: pointer

struct IN_ADDR
{
    _S_un_e__Union S_un;
}

struct IN6_ADDR
{
    _u_e__Union u;
}

struct RASIKEV2_PROJECTION_INFO
{
    uint dwIPv4NegotiationError;
    IN_ADDR ipv4Address;
    IN_ADDR ipv4ServerAddress;
    uint dwIPv6NegotiationError;
    IN6_ADDR ipv6Address;
    IN6_ADDR ipv6ServerAddress;
    uint dwPrefixLength;
    uint dwAuthenticationProtocol;
    uint dwEapTypeId;
    uint dwFlags;
    uint dwEncryptionMethod;
    uint numIPv4ServerAddresses;
    void* ipv4ServerAddresses;
    uint numIPv6ServerAddresses;
    void* ipv6ServerAddresses;
}