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<p>LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface whenever the link changes (i.e., link down) </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ga9c942c2e9655b06d4f73c630d30f60bf">&#9670;&nbsp;</a></span>LWIP_NETIF_REMOVE_CALLBACK</h2>

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          <td class="memname">#define LWIP_NETIF_REMOVE_CALLBACK&#160;&#160;&#