<div class="content"><p> </p><p>This structure represents an IPv6 subnet.</p><dl>
<dd>
<div><pre> typedef struct _tag_FW_IPV6_SUBNET {
   unsigned char Address[16];
   [range(0, 128)] unsigned long dwNumPrefixBits;
 } FW_IPV6_SUBNET,
  *PFW_IPV6_SUBNET;
</pre></div>
</dd></dl><p><b>Address:</b>  This field contains a
16-octet IPv6 address.</p><p><b>dwNumPrefixBits:</b>  This field
contains the number of more-significant bits that represent the IPv6 subnet.</p><dl>
<dd>
<p>The <b>dwNumPrefixBits</b> MUST NOT be greater than
128 and not less than 1. The address SHOULD NOT be an unspecified address (an
address composed of all zeros),<a id="Appendix_A_Target_1"></a><a aria-label="Product behavior note 1" href="1da2ee70-a6ae-4f76-b08f-fdc25c77d8a0#Appendix_A_1" data-linktype="relative-path">&lt;1&gt;</a> and it MUST
not be a loopback address. </p>
</dd></dl></div>