IPV6_MREQ

using System;
using System.Runtime.InteropServices;

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

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct IPV6_MREQ
{
    public IN6_ADDR ipv6mr_multiaddr;
    public uint ipv6mr_interface;
}

Imports System.Runtime.InteropServices

<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 IPV6_MREQ
    Public ipv6mr_multiaddr As IN6_ADDR
    Public ipv6mr_interface As UInteger
End Structure

import ctypes
from ctypes import wintypes

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

class IPV6_MREQ(ctypes.Structure):
    _fields_ = [
        ("ipv6mr_multiaddr", IN6_ADDR),
        ("ipv6mr_interface", wintypes.DWORD),
    ]

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

#[repr(C)]
pub struct IPV6_MREQ {
    pub ipv6mr_multiaddr: IN6_ADDR,
    pub ipv6mr_interface: u32,
}

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

type IN6_ADDR struct {
	u _u_e__Union
}

type IPV6_MREQ struct {
	ipv6mr_multiaddr IN6_ADDR
	ipv6mr_interface uint32
}

type
  IN6_ADDR = record
    u: _u_e__Union;
  end;

  IPV6_MREQ = record
    ipv6mr_multiaddr: IN6_ADDR;
    ipv6mr_interface: DWORD;
  end;

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

const IPV6_MREQ = extern struct {
    ipv6mr_multiaddr: IN6_ADDR,
    ipv6mr_interface: u32,
};

type
  IN6_ADDR {.bycopy.} = object
    u: _u_e__Union

  IPV6_MREQ {.bycopy.} = object
    ipv6mr_multiaddr: IN6_ADDR
    ipv6mr_interface: uint32

struct IN6_ADDR
{
    _u_e__Union u;
}

struct IPV6_MREQ
{
    IN6_ADDR ipv6mr_multiaddr;
    uint ipv6mr_interface;
}