INTERFACE_INFO_EX

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 INTERFACE_INFO_EX
{
    public uint iiFlags;
    public SOCKET_ADDRESS iiAddress;
    public SOCKET_ADDRESS iiBroadcastAddress;
    public SOCKET_ADDRESS iiNetmask;
}

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 INTERFACE_INFO_EX
    Public iiFlags As UInteger
    Public iiAddress As SOCKET_ADDRESS
    Public iiBroadcastAddress As SOCKET_ADDRESS
    Public iiNetmask As SOCKET_ADDRESS
End Structure

import ctypes
from ctypes import wintypes

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

class INTERFACE_INFO_EX(ctypes.Structure):
    _fields_ = [
        ("iiFlags", wintypes.DWORD),
        ("iiAddress", SOCKET_ADDRESS),
        ("iiBroadcastAddress", SOCKET_ADDRESS),
        ("iiNetmask", SOCKET_ADDRESS),
    ]

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

#[repr(C)]
pub struct INTERFACE_INFO_EX {
    pub iiFlags: u32,
    pub iiAddress: SOCKET_ADDRESS,
    pub iiBroadcastAddress: SOCKET_ADDRESS,
    pub iiNetmask: SOCKET_ADDRESS,
}

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

type SOCKET_ADDRESS struct {
	lpSockaddr uintptr
	iSockaddrLength int32
}

type INTERFACE_INFO_EX struct {
	iiFlags uint32
	iiAddress SOCKET_ADDRESS
	iiBroadcastAddress SOCKET_ADDRESS
	iiNetmask SOCKET_ADDRESS
}

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

  INTERFACE_INFO_EX = record
    iiFlags: DWORD;
    iiAddress: SOCKET_ADDRESS;
    iiBroadcastAddress: SOCKET_ADDRESS;
    iiNetmask: SOCKET_ADDRESS;
  end;

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

const INTERFACE_INFO_EX = extern struct {
    iiFlags: u32,
    iiAddress: SOCKET_ADDRESS,
    iiBroadcastAddress: SOCKET_ADDRESS,
    iiNetmask: SOCKET_ADDRESS,
};

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

  INTERFACE_INFO_EX {.bycopy.} = object
    iiFlags: uint32
    iiAddress: SOCKET_ADDRESS
    iiBroadcastAddress: SOCKET_ADDRESS
    iiNetmask: SOCKET_ADDRESS

struct SOCKET_ADDRESS
{
    void* lpSockaddr;
    int iSockaddrLength;
}

struct INTERFACE_INFO_EX
{
    uint iiFlags;
    SOCKET_ADDRESS iiAddress;
    SOCKET_ADDRESS iiBroadcastAddress;
    SOCKET_ADDRESS iiNetmask;
}