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[Ryan Moats <rmoats@xxxxxxxxxx>]

Public bug reported:

Branch: master

When deleting a tenant router, the reference l3 agent performs the following operations from within the qrouter namespace:
iptables-save
iptables-restore
ip6tables-save
find on /sys/class/net
find on /sys/class/net
iptables-save
ip6tables-save
find on /sys/class/net

Lastly, the qrouter namespace is removed, which begs the question of why
the above operations are performed - can they be optimized away?

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: loadimpact

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https://bugs.launchpad.net/bugs/1512450

Title:
  L3 agent: optimize operations when deleting a tenant router

Status in neutron:
  New

Bug description:
  Branch: master

  When deleting a tenant router, the reference l3 agent performs the following operations from within the qrouter namespace:
  iptables-save
  iptables-restore
  ip6tables-save
  find on /sys/class/net
  find on /sys/class/net
  iptables-save
  ip6tables-save
  find on /sys/class/net

  Lastly, the qrouter namespace is removed, which begs the question of
  why the above operations are performed - can they be optimized away?

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