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[Yi Yang <1951493@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

If OVS DPDK is restarted, tap interfaces in network namespaces can't be
opened because OVS DPDK doesn't know these name spaces, so OVS DPDK
restart will result in that tap interfaces in qr-XXX, fg-XXX, qg-XXX and
qdhcp-xxx network namespaces can't be opened by OVS DPDK, OVS DPDK will
create new tap interfaces in root namespace, the result is l3 routing,
floating IP, DHCP, metadata proxy and snat can't work.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1951493

Title:
  OVS DPDK restart results in that tap interfaces in network namespaces
  can't be opened

Status in neutron:
  New

Bug description:
  If OVS DPDK is restarted, tap interfaces in network namespaces can't
  be opened because OVS DPDK doesn't know these name spaces, so OVS DPDK
  restart will result in that tap interfaces in qr-XXX, fg-XXX, qg-XXX
  and qdhcp-xxx network namespaces can't be opened by OVS DPDK, OVS DPDK
  will create new tap interfaces in root namespace, the result is l3
  routing, floating IP, DHCP, metadata proxy and snat can't work.

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