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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Further info about this case:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">An already installed and running VM (Centos7) with static IPv4 assignment, if changed to DHCP mode, do not acquire the IP address.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">In this case, tcpdump taken on the VM, do not show DHCP offer packets that are instead seen on the host bond interface.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Seems that something is filtering DHCP offers between host physical eth interfaces and VM virtio eth interface.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Physical servers on the same VLAN keep DHCP offers and boot from PXE correctly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Roberto<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:IT"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Hi all<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">We are using oVirt engine 3.5.1-0.0 on Centos 6.6<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">We are deploying two hosts with vdsm-4.16.10-8.gitc937927.el7.x86_64<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">No hosted-engine, it run on a dedicates VM, outside oVirt.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Behavior: PXE boot of a VM, ends in timeout (0x4c106035), instead to accept the DHCP offer coming from DHCP server.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Tcpdump capture started on the vdsm host, bond0 interface shows clearly that DHCP offers reach the vdsm interfaces
<span style="color:#1F497D">></span>three times before PXE client ends in timeout.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Incoming DHCP offer is correctly tagged when it comes to the bond0 interface and forwarded to the bond0.bridge
<span style="color:#1F497D">></span>interface.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">PXE simply ignore it. PXE version is gPXE 0.9.7.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">bond0.bridge interface is already setup with STP=off and DELAY=0.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">If we install a VM using command line boot parameters, VM install & run fine. The issue is only related to PXE process,
<span style="color:#1F497D">></span>when it is expected to use the DHCP offer.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">I can provide tcpdump capture, but I’ve not attached to the email because I’m quite new of the community and don’t
<span style="color:#1F497D">></span>know if it is allowed/correct.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">On another host, under the same engine, running vdsm-4.16.12-7.gita30da75.el6.x86_64 on Centos6.6, this behavior is
<span style="color:#1F497D">></span>not happening, everything works fine.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Any idea/suggestion/further investigation ?<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Thanks for attention<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D">></span><span lang="EN-US">Best regards<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;mso-fareast-language:IT">Roberto Nunin<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;mso-fareast-language:IT">Infrastructure Manager<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;mso-fareast-language:IT">Italy<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Here are interfaces configs:<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">eno1:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">DEVICE="eno1"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">HWADDR="38:63:bb:4a:47:b0"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">MASTER="bond0"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">NM_CONTROLLED="no"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ONBOOT="yes"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">SLAVE="yes"<o:p></o:p></span></p>
<p class="MsoNormal"><b>eno2:<o:p></o:p></b></p>
<p class="MsoNormal">DEVICE="eno2"<o:p></o:p></p>
<p class="MsoNormal">HWADDR="38:63:bb:4a:47:b4"<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">MASTER="bond0"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">NM_CONTROLLED="no"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ONBOOT="yes"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">SLAVE="yes"<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">bond0:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">BONDING_OPTS="mode=4 miimon=100"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEVICE="bond0"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">NM_CONTROLLED="no"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ONBOOT="yes"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">TYPE="Bond"<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">bond0.3500:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">DEVICE=bond0.3500<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">VLAN=yes<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">BRIDGE=DMZ3_DEV<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ONBOOT=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">MTU=1500<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">NM_CONTROLLED=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">HOTPLUG=no<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">DMZ3_DEV:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">DEVICE=DMZ3_DEV<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">TYPE=Bridge<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DELAY=0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">STP=off<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ONBOOT=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">MTU=1500<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEFROUTE=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">NM_CONTROLLED=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">HOTPLUG=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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