e allowed for multicluster authentication.Support values: all authProviders (`gcp`, `azure`, `exec`, `openstack`), `clientKey`, `clientCertificate`, `tokenFile`, and `exec`.</td>
</tr>
<tr id='pilot-ip-autoallocate-ipv4-prefix'>
<td><a href='#pilot-ip-autoallocate-ipv4-prefix'><code>PILOT_IP_AUTOALLOCATE_IPV4_PREFIX</code></a></td>
<td>String</td>
<td><code>240.240.0.0/16</code></td>
<td>The CIDR range/prefix to use for auto-allocated IPv4 addresses. This should be a private range, and not conflict with any