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[Tianhao Chen <1956460@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

We are using ovs-dpdk in a compute-node without checksum offload, and VM
can't get metadata when http response has incorrect checksum. Hence we
filled checksum by iptables before the tcp packet leaving dhcp netns.
Similar bug for IPV4 (https://bugs.launchpad.net/neutron/+bug/1244589)is
raised and fixed as part of commit:

https://review.openstack.org/#/c/148718/8/neutron/agent/linux/dhcp.py

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1956460

Title:
  The VM can't get metadata from dhcp-agent

Status in neutron:
  New

Bug description:
  We are using ovs-dpdk in a compute-node without checksum offload, and
  VM can't get metadata when http response has incorrect checksum. Hence
  we filled checksum by iptables before the tcp packet leaving dhcp
  netns. Similar bug for IPV4
  (https://bugs.launchpad.net/neutron/+bug/1244589)is raised and fixed
  as part of commit:

  https://review.openstack.org/#/c/148718/8/neutron/agent/linux/dhcp.py

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