<div class="__aliyun_email_body_block"><div  style="clear:both;"><span  style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">hi, all</span></div><div  style="clear:both;"><span  style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;"><br ></span></div><div  style="clear:both;"><span  style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">I have a problem about that vm can not get ip address by dnsmasq server.</span></div><div  style="clear:both;"><span  style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">I have got the DHCP packets by tcpdump.</span></div><div  style="clear:both;"><span  style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">With the DHCP protocol, client send DHCP Discover, and then server reply DHCP Offer, next client send DHCP Request and server reply DHCP ACK, at last vm get ip address.</span></div><div  style="clear:both;">But in my openstack env, only one vm can not get ip address, and others could get a ip address.</div><div  style="clear:both;">By analysing the DHCP protocol packets (see attachment), I found that vm send DHCP Discover, but dnsmasq didn't reply DHCP Offer.</div><div  style="clear:both;"><br ></div><div  style="clear:both;">Is there any suggestion?   </div><div  style="clear:both;"><span  style="line-height:1.7;">Thanks.</span><br ></div></div>