1 | /*
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2 | * TINET (TCP/IP Protocol Stack)
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3 | *
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4 | * Copyright (C) 2001-2009 by Dep. of Computer Science and Engineering
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5 | * Tomakomai National College of Technology, JAPAN
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6 | *
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7 | * ä¸è¨èä½æ¨©è
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8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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9 | * ã«ãã£ã¦å
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10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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13 | å¸ï¼ä»¥ä¸ï¼
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14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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19 | * ç¨ã§ããå½¢ã§åé
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20 | å¸ããå ´åã«ã¯ï¼åé
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21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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22 | * è
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23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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26 | * ç¨ã§ããªãå½¢ã§åé
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27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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28 | * (a) åé
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29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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34 | ããã³TOPPERSããã¸ã§ã¯ããå
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35 | 責ãããã¨ï¼
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36 | *
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37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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38 | ã
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39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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42 | *
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43 | * @(#) $Id: nd6.h 270 2017-02-09 04:03:47Z coas-nagasima $
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44 | */
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45 |
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46 | /* $FreeBSD: src/sys/netinet6/nd6.h,v 1.10 2002/04/19 04:46:23 suz Exp $ */
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47 | /* $KAME: nd6.h,v 1.76 2001/12/18 02:10:31 itojun Exp $ */
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48 |
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49 | /*
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50 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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51 | * All rights reserved.
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52 | *
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53 | * Redistribution and use in source and binary forms, with or without
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54 | * modification, are permitted provided that the following conditions
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55 | * are met:
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56 | * 1. Redistributions of source code must retain the above copyright
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57 | * notice, this list of conditions and the following disclaimer.
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58 | * 2. Redistributions in binary form must reproduce the above copyright
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59 | * notice, this list of conditions and the following disclaimer in the
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60 | * documentation and/or other materials provided with the distribution.
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61 | * 3. Neither the name of the project nor the names of its contributors
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62 | * may be used to endorse or promote products derived from this software
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63 | * without specific prior written permission.
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64 | *
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65 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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66 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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67 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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68 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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69 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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70 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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71 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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72 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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73 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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74 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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75 | * SUCH DAMAGE.
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76 | */
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77 |
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78 | #ifndef _ND6_H_
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79 | #define _ND6_H_
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80 |
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81 | #ifdef SUPPORT_INET6
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82 |
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83 | /*
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84 | * ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹æ§é ä½ï¼T_IFNETï¼ã®ãã©ã°
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85 | */
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86 |
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87 | #define ND6_IFF_IFDISABLED UINT_C(0x01) /* ã¤ã³ã¿ãã§ã¼ã¹ãç¡å¹ã«ããã*/
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88 |
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89 | /*
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90 | * è¿é£ãã£ãã·ã¥
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91 | */
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92 |
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93 | typedef struct t_llinfo_nd6 {
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94 | T_IN6_ADDR addr;
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95 | T_NET_BUF *hold;
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96 | TMO tmout;
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97 | SYSTIM expire; /* [ms] æå¹æéãåããæå» */
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98 | T_IF_ADDR ifaddr;
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99 | uint8_t state;
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100 | uint8_t asked;
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101 | uint8_t flags;
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102 | } T_LLINFO_ND6;
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103 |
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104 | /* è¿é£ãã£ãã·ã¥ã®ç¶æ
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105 | */
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106 |
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107 | #define ND6_LLINFO_FREE 0 /* æªä½¿ç¨ */
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108 | #define ND6_LLINFO_NO_STATE 1 /* ç¶æ
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109 | æªå®ç¾© */
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110 | #define ND6_LLINFO_INCOMPLETE 2 /* æªè§£æ±º */
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111 | #define ND6_LLINFO_REACHABLE 3 /* å°éå¯è½ */
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112 | #define ND6_LLINFO_STALE 4 /* å°éå¯è½æ§ã¯æªç¢ºèª */
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113 | #define ND6_LLINFO_DELAY 5 /* å°éå¯è½æ§ã®ç¢ºèªå¾
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114 | æ© */
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115 | #define ND6_LLINFO_PROBE 6 /* å°éå¯è½æ§ã確èªä¸ */
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116 |
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117 | #define ND6_IS_LLINFO_PROBREACH(n) ((n)->state > ND6_LLINFO_INCOMPLETE)
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118 |
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119 | /* è¿é£ãã£ãã·ã¥ã®å¶å¾¡ããã */
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120 |
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121 | #define ND6_LLIF_ROUTER UINT_C(0x80) /* ã«ã¼ã¿ */
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122 | #define ND6_LLIF_ASKED UINT_C(0x40) /* éç¥æ¸ã¿ */
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123 | #define ND6_LLIF_STATE_MASK UINT_C(0x07) /* ç¶æ
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124 | ãã¹ã¯ */
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125 |
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126 | /* è¿é£æ¢ç´¢ãã£ãã·ã¥ãæå¹æéã®å®ç¾© */
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127 |
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128 | #define ND6_SLOW_TMO ((60*60*1000)/NET_TIMER_HZ)
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129 | /* 1 [æé] */
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130 | /* è¿é£æ¢ç´¢ãã£ãã·ã¥æ´æ°ã¿ã¤ã ã¢ã¦ã */
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131 |
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132 | #define ND6_MAX_DAD_TRY 15 /* éè¤ã¢ãã¬ã¹æ¤åºã®åéåæ° */
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133 | #define ND6_MAX_MCAST_QUERY 3 /* ãã«ããã£ã¹ãã¢ãã¬ã¹è¦è«ã®åéåæ° */
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134 | #define ND6_MAX_UCAST_QUERY 3 /* ã¦ããã£ã¹ãã¢ãã¬ã¹è¦è«ã®åéåæ° */
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135 |
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136 | #define ND6_INFINITE_LIFETIME 0xffffffff
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137 |
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138 | #define ND6_GCOLLECTION_TIME (60*60*24*SYSTIM_HZ)
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139 | /* ã´ãæ¾ãå¨æã1 æ¥ */
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140 | #define ND6_DELAY_TIME (5*SYSTIM_HZ) /* 確èªå¾
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141 | æ©é
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142 | 延 */
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143 | #define ND6_FIRST_DAD_DELAY_TIME (1*SYSTIM_HZ) /* æåã®éè¤ã¢ãã¬ã¹æ¤åºéä¿¡é
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144 | 延 */
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145 | #define ND6_DAD_DELAY_TIME (5*SYSTIM_HZ/10)
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146 | /* éè¤ã¢ãã¬ã¹æ¤åºéä¿¡é
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147 | 延 */
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148 |
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149 | /* è¿é£æ¢ç´¢ç¨ã¿ã¤ãã®è¨å® */
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150 |
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151 | #define ND6_TIMER_TMO ((SYSTIM_HZ/NET_TIMER_CYCLE)/5) /* 0.2[s] éé */
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152 |
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153 | /*
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154 | * å°éå¯è½ç¶æ
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155 | ã®æå¹æé
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156 | */
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157 |
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158 | #define ND6_DEF_REACHABLE_TIME (30*SYSTIM_HZ) /* å°éå¯è½ç¶æ
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159 | ã®æå¹æéã®æ¢å®å¤ */
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160 | #define ND6_MAX_REACHABLE_TIME (60*60*SYSTIM_HZ)
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161 | /* å°éå¯è½ç¶æ
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162 | ã®æå¹æéã®æ¢å®å¤ */
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163 | #define ND6_RECALC_REACHTM_INTERVAL (60*60*2*SYSTIM_HZ)
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164 | /* å°éå¯è½ç¶æ
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165 | ã®æå¹æéåè¨ç®éé */
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166 |
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167 | #define ND6_MIN_REACHTM_RAND_FACTOR 512 /* æå°ä¹±æ°è£æ£å¤ã1,024 * 0.5 */
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168 |
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169 | #if 1 /* ã¿ã¤ãã¼ã®èµ·åééãèæ
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170 | ®ããè¦å®ããçãè¨å® */
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171 | #define ND6_MAX_REACHTM_RAND_FACTOR 1484 /* æå°ä¹±æ°è£æ£å¤ã1,024 * 1.45 */
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172 | #else
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173 | #define ND6_MAX_REACHTM_RAND_FACTOR 1536 /* æå°ä¹±æ°è£æ£å¤ã1,024 * 1.5 */
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174 | #endif
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175 |
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176 | /* å°éå¯è½ç¶æ
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177 | ã®æå¹æéã®è¨ç®ãã¯ã */
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178 |
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179 | #define ND6_CALC_REACH_TIME(b) \
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180 | ((ND6_MIN_REACHTM_RAND_FACTOR * ((uint32_t)(b) >> 10)) + \
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181 | (net_rand() & ((ND6_MAX_REACHTM_RAND_FACTOR - ND6_MIN_REACHTM_RAND_FACTOR) * ((uint32_t)(b) >> 10))))
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182 |
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183 | /*
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184 | * è¿é£æ¢ç´¢ã®éä¿¡éé
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185 | */
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186 |
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187 | #define ND6_DEF_RETRANS_TIME (1*SYSTIM_HZ)
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188 |
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189 | /*
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190 | * ã«ã¼ã¿éç¥ã«ããå¤æ´ããããã¨ãããå¤
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191 | */
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192 |
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193 | #if NUM_ND6_DEF_RTR_ENTRY > 0
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194 |
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195 | /* ã«ã¼ã¿éç¥ãåä¿¡ããå ´åã¯ãéç¥ãããå¤ */
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196 |
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197 | #define ND6_REACHABLE_TIME nd6_reachable_time
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198 | #define ND6_RETRANS_TIME nd6_retrans_time
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199 |
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200 | #else /* #if NUM_ND6_DEF_RTR_ENTRY > 0 */
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201 |
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202 | /* ã«ã¼ã¿éç¥ãåä¿¡ããªãå ´åã®å¤ã¯æ¢å®å¤ */
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203 |
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204 | #define ND6_REACHABLE_TIME ND6_DEF_REACHABLE_TIME
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205 | #define ND6_RETRANS_TIME ND6_DEF_RETRANS_TIME
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206 |
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207 | #endif /* #if NUM_ND6_DEF_RTR_ENTRY > 0 */
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208 |
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209 | /*
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210 | * ãã£ãã©ã«ãã«ã¼ã¿ã»ãªã¹ã
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211 | */
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212 |
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213 | typedef struct t_def_router {
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214 | T_IN6_ADDR addr;
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215 | SYSTIM expire; /* [ms] æå¹æéãåããæå» */
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216 | uint32_t lifetime; /* [ms] æå¹æé */
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217 | uint16_t plistmap; /* ãã¬ãã£ãã¯ã¹ããã */
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218 | uint8_t flags; /* ã«ã¼ã¿éç¥ã®ãã©ã° */
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219 | uint8_t state;
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220 | } T_DEF_ROUTER;
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221 |
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222 | /* ãã£ãã©ã«ãã«ã¼ã¿ã»ãªã¹ãã®ç¶æ
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223 | */
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224 |
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225 | #define ND6_DEF_RTR_BUSY 0xff /* 使ç¨ä¸ */
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226 |
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227 | /* ãã¬ãã£ãã¯ã¹ã®ã¤ã³ããã¯ã¹ */
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228 |
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229 | #define ND6_PREFIX_IX_INVALID 0xff
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230 |
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231 | /*
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232 | * ãã¬ãã£ãã¯ã¹ã»ãªã¹ã
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233 | */
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234 |
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235 | typedef struct t_nd6_prefix {
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236 | T_IN6_ADDR prefix; /* ãã¬ãã£ãã¯ã¹ */
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237 | uint32_t expire; /* [s] æå¹æéãåããæå» */
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238 | uint32_t preferred; /* [s] æ¨å¥¨æå¹æéãåããæå» */
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239 | uint32_t vltime; /* [s] æå¹æé */
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240 | uint32_t pltime; /* [s] æ¨å¥¨æå¹æé */
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241 | uint16_t routermap; /* ã«ã¼ã¿ããã */
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242 | uint8_t flags; /* ãã©ã° */
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243 | uint8_t prefix_len; /* ãã¬ãã£ãã¯ã¹é· */
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244 | } T_ND6_PREFIX;
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245 |
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246 | /* ãã©ã° */
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247 |
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248 | #define ND6_PREFIX_FLAG_ONLINK UINT_C(0x80) /* ãªã³ãªã³ã¯ãã¬ãã£ãã¯ã¹ */
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249 | #define ND6_PREFIX_FLAG_AUTO UINT_C(0x40) /* ã¹ãã¼ãã¬ã¹ã»ã¢ãã¬ã¹èªåè¨å®*/
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250 |
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251 | #define ND6_PREFIX_STATE_BUSY UINT_C(0x01) /* 使ç¨ä¸ */
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252 | #define ND6_PREFIX_STATE_ONLINK UINT_C(0x02) /* ãªã³ãªã³ã¯ç¶æ
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253 | */
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254 | #define ND6_PREFIX_STATE_DETACHED UINT_C(0x04) /* é使ç¨ç¶æ
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255 | */
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256 |
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257 | /*
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258 | * å¤æ°
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259 | */
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260 |
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261 | extern SYSTIM nd6_base_reachable_time;
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262 | extern SYSTIM nd6_reachable_time;
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263 | extern SYSTIM nd6_recalc_reachtm_interval;
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264 | extern SYSTIM nd6_retrans_time;
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265 | extern uint8_t ip6_defhlim;
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266 |
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267 | /*
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268 | * é¢æ°
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269 | */
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270 |
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271 | extern void nd6_ifattach (T_IFNET *ifp);
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272 | extern void nd6_ns_output (T_IFNET *ifp, T_IN6_ADDR *daddr,
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273 | T_IN6_ADDR *taddr, T_LLINFO_ND6 *ln, bool_t dad);
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274 | extern void nd6_na_output (T_IFNET *ifp, T_IN6_ADDR *daddr,
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275 | T_IN6_ADDR *taddr, uint32_t flags, bool_t tlladdr);
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276 | extern void nd6_dad_start (T_IFNET *ifp, T_IN6_IFADDR *ia, int_t *tick);
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277 | extern ER nd6_output (T_IFNET *ifp, T_NET_BUF *output,
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278 | T_IN6_ADDR *dst, T_LLINFO_ND6 *ln, TMO tmout);
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279 | extern void nd6_na_input (T_NET_BUF *input, uint_t off);
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280 | extern void nd6_ns_input (T_NET_BUF *input, uint_t off);
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281 | extern void nd6_ra_input (T_NET_BUF *input, uint_t off);
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282 | extern ER nd6_storelladdr (T_IF_ADDR *out, T_IN6_ADDR *dst, T_IF_ADDR *ifa);
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283 | extern ER nd6_options (uint8_t *opt, void *nh, uint_t len);
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284 | extern T_LLINFO_ND6 *nd6_lookup (T_IN6_ADDR *addr, bool_t create);
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285 | extern ER nd6_output_hold (T_IFNET *ifp, T_LLINFO_ND6 *ln);
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286 | extern T_LLINFO_ND6 *nd6_cache_lladdr (T_IFNET *ifp, T_IN6_ADDR *from,
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287 | T_IF_ADDR *lladdr, uint8_t type, uint8_t code);
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288 | extern void nd6_defrtrlist_timer (void);
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289 | extern void nd6_prelist_timer (void);
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290 | extern void nd6_rtrsol_ctl (void);
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291 | extern T_IN6_ADDR *nd6_router_lookup (void);
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292 | extern T_DEF_ROUTER *nd6_defrtrlist_lookup (T_IN6_ADDR *src);
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293 | extern void nd6_defrtrlist_del (T_DEF_ROUTER *dr);
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294 | extern void nd6_timer (void);
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295 | extern const T_DEF_ROUTER *nd6_get_drl (uint_t *count);
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296 | extern const T_ND6_PREFIX *nd6_get_prl (void);
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297 | extern const T_LLINFO_ND6 *nd6_get_cache (void);
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298 | extern ER nd6_prefix_onlink (T_ND6_PREFIX *pr);
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299 | extern ER nd6_prefix_offlink (T_ND6_PREFIX *pr);
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300 | extern T_ND6_PREFIX *nd6_onlink_prefix_lookup (T_IN6_ADDR *dst);
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301 |
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302 | #endif /* of #ifdef SUPPORT_INET6 */
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303 |
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304 | #endif /* of #ifndef _ND6_H_ */
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