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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: quantum
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1129741

Title:
  ip_lib does not properly handle existing route for add_gateway

Status in OpenStack Quantum (virtual network service):
  Fix Released

Bug description:
  when adding a gateway route, ip_lib should ignore an error if the
  route already exists.  it does not.

  ntum/agent/dhcp_agent.py", line 538, in setup 2013-02-18 18:32:39.964
  10421 TRACE quantum.agent.dhcp_agent
  device.route.add_gateway(gateway_ip) 2013-02-18 18:32:39.964 10421
  TRACE quantum.agent.dhcp_agent File
  "/opt/stack/quantum/quantum/agent/linux/ip_lib.py", line 304, in
  add_gateway 2013-02-18 18:32:39.964 10421 TRACE
  quantum.agent.dhcp_agent self._as_root(*args) 2013-02-18 18:32:39.964
  10421 TRACE quantum.agent.dhcp_agent File
  "/opt/stack/quantum/quantum/agent/linux/ip_lib.py", line 160, in
  _as_root 2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent
  kwargs.get('use_root_namespace', False)) 2013-02-18 18:32:39.964 10421
  TRACE quantum.agent.dhcp_agent File
  "/opt/stack/quantum/quantum/agent/linux/ip_lib.py", line 47, in
  _as_root 2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent
  namespace) 2013-02-18 18:32:39.964 10421 TRACE
  quantum.agent.dhcp_agent File
  "/opt/stack/quantum/quantum/agent/linux/ip_lib.py", line 58, in
  _execute 2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent
  root_helper=root_helper) 2013-02-18 18:32:39.964 10421 TRACE
  quantum.agent.dhcp_agent File
  "/opt/stack/quantum/quantum/agent/linux/utils.py", line 60, in execute
  2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent raise
  RuntimeError(m) 2013-02-18 18:32:39.964 10421 TRACE
  quantum.agent.dhcp_agent RuntimeError: 2013-02-18 18:32:39.964 10421
  TRACE quantum.agent.dhcp_agent Command: ['sudo', '/usr/local/bin
  /quantum-rootwrap', '/etc/quantum/rootwrap.conf', 'ip', 'netns',
  'exec', 'qdhcp-562f78f3-c9a8-43c4-b8e5-5fee1414c9ed', 'ip', 'route',
  'add', 'default', 'via', '169.254.169.253', 'dev', 'tap52bd9baf-89']
  2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent Exit
  code: 2 2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent
  Stdout: '' 2013-02-18 18:32:39.964 10421 TRACE
  quantum.agent.dhcp_agent Stderr: 'RTNETLINK answers: File exists\n'
  2013-02-18 18:32:39.964 10421 TRACE quantum.agent.dhcp_agent

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