[rhos-list] Cirros VM image DHCP issues

[Prashanth Prahalad]

Hi Folks,

I just wanted to bounce this on the alias and get ideas on what could be
going on. I've a quantum/OVS setup. I spin up the Cirros image and when the
machine comes up it fails to get the DHCP address.

I do see the DHCP request and the DHCP reply coming back from the DHCP
server.

Here's the tcpdump on the tap interface attached to the VM:

[root at rhos3 ~]# *tcpdump -i tap97c9b343-4a*
tcpdump: WARNING: tap97c9b343-4a: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tap97c9b343-4a, link-type EN10MB (Ethernet), capture size
65535 bytes
04:09:47.852793 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2,
1 group record(s), length 28
*04:09:47.857854 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
Request from fa:16:3e:a6:eb:e6 (oui Unknown), length 280*
*04:09:47.857858 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
Request from fa:16:3e:a6:eb:e6 (oui Unknown), length 280*
*04:09:47.858132 IP 192.168.10.3.bootps > 192.168.10.6.bootpc: BOOTP/DHCP,
Reply, length 322*
*04:09:47.858395 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
Request from fa:16:3e:a6:eb:e6 (oui Unknown), length 292*
*04:09:47.858397 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
Request from fa:16:3e:a6:eb:e6 (oui Unknown), length 292*
*04:09:47.858493 IP 192.168.10.3.bootps > 192.168.10.6.bootpc: BOOTP/DHCP,
Reply, length 322*

[root at rhos3 ~]# *ifconfig tap97c9b343-4a*
tap97c9b343-4a Link encap:Ethernet  HWaddr FE:16:3E:A6:EB:E6
          inet6 addr: fe80::fc16:3eff:fea6:ebe6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:74 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10943 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:18144 (17.7 KiB)  TX bytes:620606 (606.0 KiB)


So any ideas why this DHCP reply is being rejected by the Cirros VM ?

Any clue on how to debug this further.

Regards,
Prasahnth
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