HI:<div>     I get essex(flatdhcp),</div><div><br></div><div>     i have mulit network in my instance,</div><div><br></div>







<p class="p1">create network like this:</p><p class="p1"><font color="#ff0000">#nova-manage network create --label=public --fixed_range_v4=<a href="http://10.0.0.0/24">10.0.0.0/24</a> --network_size=255 --bridge=public --bridge_interface=em2 --multi_host=T</font></p>

<div><font color="#ff0000">#nova-manage network create --label=private --fixed_range_v4=<a href="http://10.0.1.0/24">10.0.1.0/24</a> --network_size=255 --bridge=private --bridge_interface=em3 --multi_host=T </font>   </div>
<div><br></div><div>netwrok list</div><div><div># nova-manage network list</div><div><font color="#ff0000">id   <span class="Apple-tab-span" style="white-space:pre">  </span>IPv4              <span class="Apple-tab-span" style="white-space:pre">   </span>IPv6           <span class="Apple-tab-span" style="white-space:pre">        </span>start address  <span class="Apple-tab-span" style="white-space:pre">    </span>DNS1           <span class="Apple-tab-span" style="white-space:pre">        </span>DNS2           <span class="Apple-tab-span" style="white-space:pre">        </span>VlanID         <span class="Apple-tab-span" style="white-space:pre"> </span>project        <span class="Apple-tab-span" style="white-space:pre"> </span>uuid           </font></div>
<div><font color="#ff0000">1    <span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://10.0.0.0/24">10.0.0.0/24</a>       <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>10.0.0.2       <span class="Apple-tab-span" style="white-space:pre">  </span>8.8.4.4        <span class="Apple-tab-span" style="white-space:pre"> </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>b66ea728-9ac5-42ba-b666-82adc1dad37f</font></div>
<div><font color="#ff0000">2    <span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://10.0.1.0/24">10.0.1.0/24</a>       <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>10.0.1.2       <span class="Apple-tab-span" style="white-space:pre">  </span>8.8.4.4        <span class="Apple-tab-span" style="white-space:pre"> </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>None           <span class="Apple-tab-span" style="white-space:pre">        </span>3b4aecd6-5541-4dda-bd45-d21c4a0701b3</font></div>
</div><div><br></div><div>like this,the instance can work correct,</div><div>the instance default route to public is 10.0.1.*（i hope the default route is 10.0.0.*） </div><div><br></div><div>but when i <span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap">assignation an floating ip to the instance,the floating ip </span><span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap">assignation to  ip (10.0.0.*) of the instance not 10.0.1.*,so the instance's network has wrong,'</span></div>
<div><span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap"><br></span></div><div><span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap">so, i get this,</span><font face="arial, sans-serif" color="#ff0000"><span style="white-space:nowrap">use_single_default_gateway=True</span></font><span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap"> in nova.conf, in this situation,<font color="#ff0000">sometime</font>  the instance can't get route,the instance's network can't work.</span></div>
<div><span style="background-color:rgb(255,255,255);font-family:arial,sans-serif;font-size:13px;white-space:nowrap">like this:</span></div><div><font face="arial, sans-serif"><span style="white-space:nowrap"><img src="cid:ii_13814b203b047e24" alt="内嵌图片 6"><br>
</span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap">it shoud be like this:<br></span></font></div>
<div><font face="arial, sans-serif"><span style="white-space:nowrap"><img src="cid:ii_13814b283648a466" alt="内嵌图片 7"><br></span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div>
<div><font face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap">is there anyone can help me?</span></font></div>
<div><font face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div><div><font face="arial, sans-serif"><span style="white-space:nowrap">thank very much   :)</span></font></div>