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[abel <coolboy1353@xxxxxxx>]

Public bug reported:

At first, there are 5 vms with floatingips on the same one host and in the same subnet. 
+------+-----------+---------------+
| id   | fixed ip  | floatingip    |
+------+-----------+---------------+
| vm1  | 10.0.0.4  | 10.187.165.52 |
| vm2  | 10.0.0.5  | 10.187.165.53 |
| vm3  | 10.0.0.6  | 10.187.165.54 |
| vm4  | 10.0.0.7  | 10.187.165.55 |
| vm5  | 10.0.0.8  | 10.187.165.56 |
| vm6  | 10.0.0.9  |               |
| vm7  | 10.0.0.10 |               |
| vm8  | 10.0.0.11 |               |
| vm9  | 10.0.0.12 |               |
| vm10 | 10.0.0.13 |               |
+------+-----------+---------------+

then, dissassociate the floatingip and associate to vm6~vm10. 
in the loop:
	floatingip-disassociate FIP-ID
	floatingip-associate FIP-ID PORT-ID

we found no rule added in the ns qrouter-*, there is the old rules
on the compute node:
$ ip net exec qrouter-72da0968-f904-4bce-a1d5-bf3f00f7fb6e ip rule list
0:      from all lookup local 
32766:  from all lookup main 
32767:  from all lookup default 
52104:  from 10.0.0.4 lookup 16 
52108:  from 10.0.0.5 lookup 16 
52109:  from 10.0.0.6 lookup 16 
60018:  from 10.0.0.7 lookup 16 
60019:  from 10.0.0.8 lookup 16 
69642:  from 10.0.0.9 lookup 16 
167772161:   from 10.0.0.1/24 lookup 167772161

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1701190

Title:
  no rule added after updating floatingip

Status in neutron:
  New

Bug description:
  At first, there are 5 vms with floatingips on the same one host and in the same subnet. 
  +------+-----------+---------------+
  | id   | fixed ip  | floatingip    |
  +------+-----------+---------------+
  | vm1  | 10.0.0.4  | 10.187.165.52 |
  | vm2  | 10.0.0.5  | 10.187.165.53 |
  | vm3  | 10.0.0.6  | 10.187.165.54 |
  | vm4  | 10.0.0.7  | 10.187.165.55 |
  | vm5  | 10.0.0.8  | 10.187.165.56 |
  | vm6  | 10.0.0.9  |               |
  | vm7  | 10.0.0.10 |               |
  | vm8  | 10.0.0.11 |               |
  | vm9  | 10.0.0.12 |               |
  | vm10 | 10.0.0.13 |               |
  +------+-----------+---------------+

  then, dissassociate the floatingip and associate to vm6~vm10. 
  in the loop:
  	floatingip-disassociate FIP-ID
  	floatingip-associate FIP-ID PORT-ID

  we found no rule added in the ns qrouter-*, there is the old rules
  on the compute node:
  $ ip net exec qrouter-72da0968-f904-4bce-a1d5-bf3f00f7fb6e ip rule list
  0:      from all lookup local 
  32766:  from all lookup main 
  32767:  from all lookup default 
  52104:  from 10.0.0.4 lookup 16 
  52108:  from 10.0.0.5 lookup 16 
  52109:  from 10.0.0.6 lookup 16 
  60018:  from 10.0.0.7 lookup 16 
  60019:  from 10.0.0.8 lookup 16 
  69642:  from 10.0.0.9 lookup 16 
  167772161:   from 10.0.0.1/24 lookup 167772161

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