0.0/16</dt>
<dd>reserved for self-assigned IPs</dd>
<dt>127.0.0.0/8</dt>
<dd>reserved for loopback</dd>
</dl>
</div>
<div class="section" id="backwards-compatibility-and-transition">
<h1>backwards compatibility and transition</h1>
<p>During some transition period, this restriction should not be enforced, and
peers whose node ID does not match this formula relative to their external IP
should not be blocked.</p>
<p>Requests from peers whose node ID does not match their external IP should
always be serviced, 