ND_OPTION_PREFIX_INFO

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 ND_OPTION_PREFIX_INFO
{
    public byte nd_opt_pi_type;
    public byte nd_opt_pi_len;
    public byte nd_opt_pi_prefix_len;
    public _Anonymous1_e__Union Anonymous1;
    public uint nd_opt_pi_valid_time;
    public uint nd_opt_pi_preferred_time;
    public _Anonymous2_e__Union Anonymous2;
    public IN6_ADDR nd_opt_pi_prefix;
}

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 ND_OPTION_PREFIX_INFO
    Public nd_opt_pi_type As Byte
    Public nd_opt_pi_len As Byte
    Public nd_opt_pi_prefix_len As Byte
    Public Anonymous1 As _Anonymous1_e__Union
    Public nd_opt_pi_valid_time As UInteger
    Public nd_opt_pi_preferred_time As UInteger
    Public Anonymous2 As _Anonymous2_e__Union
    Public nd_opt_pi_prefix As IN6_ADDR
End Structure

import ctypes
from ctypes import wintypes

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

class ND_OPTION_PREFIX_INFO(ctypes.Structure):
    _fields_ = [
        ("nd_opt_pi_type", ctypes.c_ubyte),
        ("nd_opt_pi_len", ctypes.c_ubyte),
        ("nd_opt_pi_prefix_len", ctypes.c_ubyte),
        ("Anonymous1", _Anonymous1_e__Union),
        ("nd_opt_pi_valid_time", wintypes.DWORD),
        ("nd_opt_pi_preferred_time", wintypes.DWORD),
        ("Anonymous2", _Anonymous2_e__Union),
        ("nd_opt_pi_prefix", IN6_ADDR),
    ]

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

#[repr(C)]
pub struct ND_OPTION_PREFIX_INFO {
    pub nd_opt_pi_type: u8,
    pub nd_opt_pi_len: u8,
    pub nd_opt_pi_prefix_len: u8,
    pub Anonymous1: _Anonymous1_e__Union,
    pub nd_opt_pi_valid_time: u32,
    pub nd_opt_pi_preferred_time: u32,
    pub Anonymous2: _Anonymous2_e__Union,
    pub nd_opt_pi_prefix: IN6_ADDR,
}

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

type IN6_ADDR struct {
	u _u_e__Union
}

type ND_OPTION_PREFIX_INFO struct {
	nd_opt_pi_type byte
	nd_opt_pi_len byte
	nd_opt_pi_prefix_len byte
	Anonymous1 _Anonymous1_e__Union
	nd_opt_pi_valid_time uint32
	nd_opt_pi_preferred_time uint32
	Anonymous2 _Anonymous2_e__Union
	nd_opt_pi_prefix IN6_ADDR
}

type
  IN6_ADDR = record
    u: _u_e__Union;
  end;

  ND_OPTION_PREFIX_INFO = record
    nd_opt_pi_type: Byte;
    nd_opt_pi_len: Byte;
    nd_opt_pi_prefix_len: Byte;
    Anonymous1: _Anonymous1_e__Union;
    nd_opt_pi_valid_time: DWORD;
    nd_opt_pi_preferred_time: DWORD;
    Anonymous2: _Anonymous2_e__Union;
    nd_opt_pi_prefix: IN6_ADDR;
  end;

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

const ND_OPTION_PREFIX_INFO = extern struct {
    nd_opt_pi_type: u8,
    nd_opt_pi_len: u8,
    nd_opt_pi_prefix_len: u8,
    Anonymous1: _Anonymous1_e__Union,
    nd_opt_pi_valid_time: u32,
    nd_opt_pi_preferred_time: u32,
    Anonymous2: _Anonymous2_e__Union,
    nd_opt_pi_prefix: IN6_ADDR,
};

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

  ND_OPTION_PREFIX_INFO {.bycopy.} = object
    nd_opt_pi_type: uint8
    nd_opt_pi_len: uint8
    nd_opt_pi_prefix_len: uint8
    Anonymous1: _Anonymous1_e__Union
    nd_opt_pi_valid_time: uint32
    nd_opt_pi_preferred_time: uint32
    Anonymous2: _Anonymous2_e__Union
    nd_opt_pi_prefix: IN6_ADDR

struct IN6_ADDR
{
    _u_e__Union u;
}

struct ND_OPTION_PREFIX_INFO
{
    ubyte nd_opt_pi_type;
    ubyte nd_opt_pi_len;
    ubyte nd_opt_pi_prefix_len;
    _Anonymous1_e__Union Anonymous1;
    uint nd_opt_pi_valid_time;
    uint nd_opt_pi_preferred_time;
    _Anonymous2_e__Union Anonymous2;
    IN6_ADDR nd_opt_pi_prefix;
}