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[shihanzhang <shihanzhang@xxxxxxxxxx>]

Public bug reported:

when I create a dvr router, I found there are duplicate routes in router
namespace:

root@devstack:~# ip netns exec qrouter-bd7efd9a-88bb-4d19-bfe9-d5d24ec16eda ip rule
0:      from all lookup local 
32766:  from all lookup main 
32767:  from all lookup default 
32768:  from 10.0.0.3 lookup 16 
32769:  from 20.20.20.5 lookup 16 
167772161:      from 10.0.0.1/24 lookup 167772161 
167772161:      from 10.0.0.1/24 lookup 167772161 
167772161:      from 10.0.0.1/24 lookup 167772161 
167772161:      from 10.0.0.1/24 lookup 167772161 
167772161:      from 10.0.0.1/24 lookup 167772161 
336860161:      from 20.20.20.1/24 lookup 336860161 
336860161:      from 20.20.20.1/24 lookup 336860161 
336860161:      from 20.20.20.1/24 lookup 336860161 
336860161:      from 20.20.20.1/24 lookup 336860161 
336860161:      from 20.20.20.1/24 lookup 336860161

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1416306

Title:
  duplicate routes in the namespace of dvr router agent

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  when I create a dvr router, I found there are duplicate routes in
  router namespace:

  root@devstack:~# ip netns exec qrouter-bd7efd9a-88bb-4d19-bfe9-d5d24ec16eda ip rule
  0:      from all lookup local 
  32766:  from all lookup main 
  32767:  from all lookup default 
  32768:  from 10.0.0.3 lookup 16 
  32769:  from 20.20.20.5 lookup 16 
  167772161:      from 10.0.0.1/24 lookup 167772161 
  167772161:      from 10.0.0.1/24 lookup 167772161 
  167772161:      from 10.0.0.1/24 lookup 167772161 
  167772161:      from 10.0.0.1/24 lookup 167772161 
  167772161:      from 10.0.0.1/24 lookup 167772161 
  336860161:      from 20.20.20.1/24 lookup 336860161 
  336860161:      from 20.20.20.1/24 lookup 336860161 
  336860161:      from 20.20.20.1/24 lookup 336860161 
  336860161:      from 20.20.20.1/24 lookup 336860161 
  336860161:      from 20.20.20.1/24 lookup 336860161

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