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[Zhangqi Chen <chenzhangqi@xxxxxx>]

Public bug reported:

Reproduce:
1. delete all rules in compute node.
     iptables --flush
2. restart neutron-openvswitch-agent, and neutron-openvswitch-agent will try to rebuild all chains and rules. Then a error message can be found in neutron-openvswitch-agent log file, like belows:

Stdout: 
Stderr: iptables-restore: line 57 failed

The attachment is input file of iptables-restore. I found 'COMMIT' line
at the middle of 'filter' table, it is illegal format.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: sg-fw

** Attachment added: "iptables restored file"
   https://bugs.launchpad.net/bugs/1488747/+attachment/4452445/+files/sg_bug.txt

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https://bugs.launchpad.net/bugs/1488747

Title:
  algorithm error in function _modify_rules of iptables_manager.py

Status in neutron:
  New

Bug description:
  Reproduce:
  1. delete all rules in compute node.
       iptables --flush
  2. restart neutron-openvswitch-agent, and neutron-openvswitch-agent will try to rebuild all chains and rules. Then a error message can be found in neutron-openvswitch-agent log file, like belows:

  Stdout: 
  Stderr: iptables-restore: line 57 failed

  The attachment is input file of iptables-restore. I found 'COMMIT'
  line at the middle of 'filter' table, it is illegal format.

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