  <table class="params">
    <tr><td class="paramname">netmask</td><td>the IPv4 netmask to check (in network byte order!) </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>1 if the netmask is valid, 0 if it is not </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af66de98501e92c66714d58119b6d9e1a">&#9670;&nbsp;</a></span>ip4addr_aton()</h2>

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