<div class="__aliyun_email_body_block"><div  style="line-height:1.7;font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;"><div  style="clear:both;"><br ></div><div  style="clear:both;">Hi, the community</div><div  style="clear:both;"><br ></div><div  style="clear:both;">After installation of "<a  class="reference internal" href="https://docs.starlingx.io/deploy_install_guides/r2_release/virtual/aio_simplex.html" style="text-align:left;color:#30739c;text-transform:none;text-indent:.0px;font-size:14.0px;font-style:normal;font-variant:normal;font-weight:400;text-decoration:underline;background-color:transparent;">Virtual All-in-one Simplex Installation R2.0</a>", everything goes well except,</div><div  style="clear:both;"><br ></div><div  style="clear:both;"><span  style="color:#366092;font-style:italic;background-color:#ffffff;">controller-0:~$ openstack network create  --share --external   --provider-physical-network provider   --provider-network-type flat provider<br >Error while executing command: BadRequestException: 400, Invalid input for operation: Flat provider networks are disabled.</span></div><div  style="clear:both;"><br ></div><div  style="clear:both;">Could anyone help to point out what's the issue, and how to fix it?<br ></div><div  style="clear:both;"><br ></div><div  style="clear:both;">Best Regard</div><div  style="clear:both;"><br ></div></div></div>