cket received on the <code>en0</code> interface might have the
address field set to <code>'fe80::2618:1234:ab11:3b9c%en0'</code>, where <code>'%en0'</code>
is the interface name as a zone id suffix.</p>
<h3><code>socket.addMembership(multicastAddress[, multicastInterface])</code><span><a class="mark" href="#dgram_socket_addmembership_multicastaddress_multicastinterface" id="dgram_socket_addmembership_multicastaddress_multicastinterface">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.6.9</sp