e></td>
<td>Comma separated list of additional labels to be added to metadata exchange filter.</td>
</tr>
<tr id='pilot-persistent-session-header-label'>
<td><a href='#pilot-persistent-session-header-label'><code>PILOT_PERSISTENT_SESSION_HEADER_LABEL</code></a></td>
<td>String</td>
<td><code>istio.io/persistent-session-header</code></td>
<td>If not empty, services with this label will use header based persistent sessions</td>
</tr>
<tr id='pilot-persistent-session-label'>
<td><a href='#pilot-persistent-sess