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 <span id="projectnumber">2.0</span>
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<div class="title">Neighbor discovery<div class="ingroups"><a class="el" href="../../d9/de2/group__lwip__opts.html">Options (lwipopts.h)</a> » <a class="el" href="../../d9/dc3/group__lwip__opts__ipv6.html">IPv6</a></div></div> </div>
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Collaboration diagram for Neighbor discovery:</div>
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<map name="db_2d90_2group____lwip____opts____nd6" id="db_2d90_2group____lwip____opts____nd6">
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:gad35d10353ac7c7d2c8d4b83788cdc6d9"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gad35d10353ac7c7d2c8d4b83788cdc6d9">LWIP_ND6_ALLOW_RA_UPDATES</a>   1</td></tr>
<tr class="separator:gad35d10353ac7c7d2c8d4b83788cdc6d9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga315bd6d4a9d185766dfc3253cd9d7715"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga315bd6d4a9d185766dfc3253cd9d7715">LWIP_ND6_DELAY_FIRST_PROBE_TIME</a>   5000</td></tr>
<tr class="separator:ga315bd6d4a9d185766dfc3253cd9d7715"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga960b8973df083fad53ae0eaa79f8c4df"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga960b8973df083fad53ae0eaa79f8c4df">LWIP_ND6_MAX_ANYCAST_DELAY_TIME</a>   1000</td></tr>
<tr class="separator:ga960b8973df083fad53ae0eaa79f8c4df"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga980909018aed54adc10dd68be3572b30"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga980909018aed54adc10dd68be3572b30">LWIP_ND6_MAX_MULTICAST_SOLICIT</a>   3</td></tr>
<tr class="separator:ga980909018aed54adc10dd68be3572b30"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga86ab0cac87cdc7aeff09384ddbaaba2a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga86ab0cac87cdc7aeff09384ddbaaba2a">LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT</a>   3</td></tr>
<tr class="separator:ga86ab0cac87cdc7aeff09384ddbaaba2a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gafa6f4c2d2c259ab0895fa03a6f08c691"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gafa6f4c2d2c259ab0895fa03a6f08c691">LWIP_ND6_MAX_UNICAST_SOLICIT</a>   3</td></tr>
<tr class="separator:gafa6f4c2d2c259ab0895fa03a6f08c691"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gacad118b1ae886e80137a1d4f0fb19672"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gacad118b1ae886e80137a1d4f0fb19672">LWIP_ND6_NUM_DESTINATIONS</a>   10</td></tr>
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<tr class="memitem:gab2fe15bdb4e0a41f295eb5577b11ad16"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gab2fe15bdb4e0a41f295eb5577b11ad16">LWIP_ND6_NUM_NEIGHBORS</a>   10</td></tr>
<tr class="separator:gab2fe15bdb4e0a41f295eb5577b11ad16"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad9cc576b5951f1b5e1c2b0d0bb831d9a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gad9cc576b5951f1b5e1c2b0d0bb831d9a">LWIP_ND6_NUM_PREFIXES</a>   5</td></tr>
<tr class="separator:gad9cc576b5951f1b5e1c2b0d0bb831d9a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga75e81a96148f266c8fad8c0bcab2f36a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga75e81a96148f266c8fad8c0bcab2f36a">LWIP_ND6_NUM_ROUTERS</a>   3</td></tr>
<tr class="separator:ga75e81a96148f266c8fad8c0bcab2f36a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0757a3c1b5d1563ad2d77228e1d8a60f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga0757a3c1b5d1563ad2d77228e1d8a60f">LWIP_ND6_QUEUEING</a>   (<a class="el" href="../../d9/dc3/group__lwip__opts__ipv6.html#ga872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a>)</td></tr>
<tr class="separator:ga0757a3c1b5d1563ad2d77228e1d8a60f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaea4d829c0b52cc6cc28925eee89a7429"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gaea4d829c0b52cc6cc28925eee89a7429">LWIP_ND6_RDNSS_MAX_DNS_SERVERS</a>   0</td></tr>
<tr class="separator:gaea4d829c0b52cc6cc28925eee89a7429"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga269db9d61cdfc2fd3bc7b12c56261c74"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga269db9d61cdfc2fd3bc7b12c56261c74">LWIP_ND6_REACHABLE_TIME</a>   30000</td></tr>
<tr class="separator:ga269db9d61cdfc2fd3bc7b12c56261c74"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga461abcbeef1d236d1f3201827dd28ad9"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga461abcbeef1d236d1f3201827dd28ad9">LWIP_ND6_RETRANS_TIMER</a>   1000</td></tr>
<tr class="separator:ga461abcbeef1d236d1f3201827dd28ad9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9d7cb6fd447ef0f6726f565e2c7509c4"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#ga9d7cb6fd447ef0f6726f565e2c7509c4">LWIP_ND6_TCP_REACHABILITY_HINTS</a>   1</td></tr>
<tr class="separator:ga9d7cb6fd447ef0f6726f565e2c7509c4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabfaf3d92d51e2a9d70c8360af2611fb2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d90/group__lwip__opts__nd6.html#gabfaf3d92d51e2a9d70c8360af2611fb2">MEMP_NUM_ND6_QUEUE</a>   20</td></tr>
<tr class="separator:gabfaf3d92d51e2a9d70c8360af2611fb2"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="gad35d10353ac7c7d2c8d4b83788cdc6d9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gad35d10353ac7c7d2c8d4b83788cdc6d9">◆ </a></span>LWIP_ND6_ALLOW_RA_UPDATES</h2>
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<td class="memname">#define LWIP_ND6_ALLOW_RA_UPDATES   1</td>
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<p>LWIP_ND6_ALLOW_RA_UPDATES==1: Allow Router Advertisement messages to update Reachable time and retransmission timers, and netif MTU. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02331">2331</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="ga315bd6d4a9d185766dfc3253cd9d7715"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga315bd6d4a9d185766dfc3253cd9d7715">◆ </a></span>LWIP_ND6_DELAY_FIRST_PROBE_TIME</h2>
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<td class="memname">#define LWIP_ND6_DELAY_FIRST_PROBE_TIME   5000</td>
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<p>LWIP_ND6_DELAY_FIRST_PROBE_TIME: Delay before first unicast neighbor solicitation message is sent, during neighbor reachability detection. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02323">2323</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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</div>
<a id="ga960b8973df083fad53ae0eaa79f8c4df"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga960b8973df083fad53ae0eaa79f8c4df">◆ </a></span>LWIP_ND6_MAX_ANYCAST_DELAY_TIME</h2>
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<td class="memname">#define LWIP_ND6_MAX_ANYCAST_DELAY_TIME   1000</td>
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<p>Unused: See ND RFC (time in milliseconds). </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02293">2293</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="ga980909018aed54adc10dd68be3572b30"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga980909018aed54adc10dd68be3572b30">◆ </a></span>LWIP_ND6_MAX_MULTICAST_SOLICIT</h2>
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<td class="memname">#define LWIP_ND6_MAX_MULTICAST_SOLICIT   3</td>
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<p>LWIP_ND6_MAX_MULTICAST_SOLICIT: max number of multicast solicit messages to send (neighbor solicit and router solicit) </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02278">2278</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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</div>
<a id="ga86ab0cac87cdc7aeff09384ddbaaba2a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga86ab0cac87cdc7aeff09384ddbaaba2a">◆ </a></span>LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT</h2>
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<td class="memname">#define LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT   3</td>
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<p>Unused: See ND RFC </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02300">2300</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="gafa6f4c2d2c259ab0895fa03a6f08c691"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gafa6f4c2d2c259ab0895fa03a6f08c691">◆ </a></span>LWIP_ND6_MAX_UNICAST_SOLICIT</h2>
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<td class="memname">#define LWIP_ND6_MAX_UNICAST_SOLICIT   3</td>
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<p>LWIP_ND6_MAX_UNICAST_SOLICIT: max number of unicast neighbor solicitation messages to send during neighbor reachability detection. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02286">2286</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="gacad118b1ae886e80137a1d4f0fb19672"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gacad118b1ae886e80137a1d4f0fb19672">◆ </a></span>LWIP_ND6_NUM_DESTINATIONS</h2>
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<td class="memname">#define LWIP_ND6_NUM_DESTINATIONS   10</td>
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<p>LWIP_ND6_NUM_DESTINATIONS: number of entries in IPv6 destination cache </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02256">2256</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="gab2fe15bdb4e0a41f295eb5577b11ad16"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gab2fe15bdb4e0a41f295eb5577b11ad16">◆ </a></span>LWIP_ND6_NUM_NEIGHBORS</h2>
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<td class="memname">#define LWIP_ND6_NUM_NEIGHBORS   10</td>
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<p>LWIP_ND6_NUM_NEIGHBORS: Number of entries in IPv6 neighbor cache </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02249">2249</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="gad9cc576b5951f1b5e1c2b0d0bb831d9a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gad9cc576b5951f1b5e1c2b0d0bb831d9a">◆ </a></span>LWIP_ND6_NUM_PREFIXES</h2>
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<td class="memname">#define LWIP_ND6_NUM_PREFIXES   5</td>
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<p>LWIP_ND6_NUM_PREFIXES: number of entries in IPv6 on-link prefixes cache </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02263">2263</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="ga75e81a96148f266c8fad8c0bcab2f36a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga75e81a96148f266c8fad8c0bcab2f36a">◆ </a></span>LWIP_ND6_NUM_ROUTERS</h2>
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<td class="memname">#define LWIP_ND6_NUM_ROUTERS   3</td>
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<p>LWIP_ND6_NUM_ROUTERS: number of entries in IPv6 default router cache </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02270">2270</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="ga0757a3c1b5d1563ad2d77228e1d8a60f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga0757a3c1b5d1563ad2d77228e1d8a60f">◆ </a></span>LWIP_ND6_QUEUEING</h2>
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<td class="memname">#define LWIP_ND6_QUEUEING   (<a class="el" href="../../d9/dc3/group__lwip__opts__ipv6.html#ga872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a>)</td>
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<p>LWIP_ND6_QUEUEING==1: queue outgoing IPv6 packets while MAC address is being resolved. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02235">2235</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="gaea4d829c0b52cc6cc28925eee89a7429"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaea4d829c0b52cc6cc28925eee89a7429">◆ </a></span>LWIP_ND6_RDNSS_MAX_DNS_SERVERS</h2>
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<td class="memname">#define LWIP_ND6_RDNSS_MAX_DNS_SERVERS   0</td>
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<p>LWIP_ND6_RDNSS_MAX_DNS_SERVERS > 0: Use IPv6 Router Advertisement Recursive DNS Server Option (as per RFC 6106) to copy a defined maximum number of DNS servers to the DNS module. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02349">2349</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<a id="ga269db9d61cdfc2fd3bc7b12c56261c74"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga269db9d61cdfc2fd3bc7b12c56261c74">◆ </a></span>LWIP_ND6_REACHABLE_TIME</h2>
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<td class="memname">#define LWIP_ND6_REACHABLE_TIME   30000</td>
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<p>LWIP_ND6_REACHABLE_TIME: default neighbor reachable time (in milliseconds). May be updated by router advertisement messages. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02308">2308</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga461abcbeef1d236d1f3201827dd28ad9">◆ </a></span>LWIP_ND6_RETRANS_TIMER</h2>
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<td class="memname">#define LWIP_ND6_RETRANS_TIMER   1000</td>
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<p>LWIP_ND6_RETRANS_TIMER: default retransmission timer for solicitation messages </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02315">2315</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga9d7cb6fd447ef0f6726f565e2c7509c4">◆ </a></span>LWIP_ND6_TCP_REACHABILITY_HINTS</h2>
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<td class="memname">#define LWIP_ND6_TCP_REACHABILITY_HINTS   1</td>
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<p>LWIP_ND6_TCP_REACHABILITY_HINTS==1: Allow TCP to provide Neighbor Discovery with reachability hints for connected destinations. This helps avoid sending unicast neighbor solicitation messages. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02340">2340</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#gabfaf3d92d51e2a9d70c8360af2611fb2">◆ </a></span>MEMP_NUM_ND6_QUEUE</h2>
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<td class="memname">#define MEMP_NUM_ND6_QUEUE   20</td>
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<p>MEMP_NUM_ND6_QUEUE: Max number of IPv6 packets to queue during MAC resolution. </p>
<p class="definition">Definition at line <a class="el" href="../../dc/dba/opt_8h_source.html#l02242">2242</a> of file <a class="el" href="../../dc/dba/opt_8h_source.html">opt.h</a>.</p>
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