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[Bug 1791479] [NEW] rocky: dhcp-agent traces on PD subnet due to missing default gateway

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Matthew Thode <1791479@xxxxxxxxxxxxxxxxxx>
Date: Sun, 09 Sep 2018 02:44:26 -0000
Reply-to: Bug 1791479 <1791479@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

2018-09-08 21:40:56.619 7678 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb', 'ip', '-6', 'route', 'list', 'dev', 'ns-9c5e28a3-3a'] create_process /usr/lib64/python3.5/site-packages/neutron/agent/linux/utils.py:87
2018-09-08 21:40:57.242 7678 DEBUG neutron.agent.linux.dhcp [-] Setting IPv6 gateway for dhcp netns on net a06d6387-5232-4552-aaf7-734ed2268aeb to ::1 _set_default_route_ip_version /usr/lib64/python3.5/site-packages/neutron/agent/linux/dhcp.py:1234
2018-09-08 21:40:57.244 7678 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb', 'ip', '-6', 'route', 'replace', 'default', 'via', '::1', 'dev', 'ns-9c5e28a3-3a'] create_process /usr/lib64/python3.5/site-packages/neutron/agent/linux/utils.py:87
2018-09-08 21:40:57.912 7678 ERROR neutron.agent.linux.utils [-] Exit code: 2; Stdin: ; Stdout: ; Stderr: RTNETLINK answers: Invalid argument

# sudo neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb ip -6 route list dev ns-9c5e28a3-3a
::/64 proto kernel metric 256 pref medium
fe80::/64 proto kernel metric 256 pref medium

# sudo neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb ip -6 route replace default via ::1 dev ns-9c5e28a3-3a
RTNETLINK answers: Invalid argument

** Affects: neutron
     Importance: Undecided
         Status: New

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Title:
  rocky: dhcp-agent traces on PD subnet due to missing default gateway

Status in neutron:
  New

Bug description:
  2018-09-08 21:40:56.619 7678 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb', 'ip', '-6', 'route', 'list', 'dev', 'ns-9c5e28a3-3a'] create_process /usr/lib64/python3.5/site-packages/neutron/agent/linux/utils.py:87
  2018-09-08 21:40:57.242 7678 DEBUG neutron.agent.linux.dhcp [-] Setting IPv6 gateway for dhcp netns on net a06d6387-5232-4552-aaf7-734ed2268aeb to ::1 _set_default_route_ip_version /usr/lib64/python3.5/site-packages/neutron/agent/linux/dhcp.py:1234
  2018-09-08 21:40:57.244 7678 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb', 'ip', '-6', 'route', 'replace', 'default', 'via', '::1', 'dev', 'ns-9c5e28a3-3a'] create_process /usr/lib64/python3.5/site-packages/neutron/agent/linux/utils.py:87
  2018-09-08 21:40:57.912 7678 ERROR neutron.agent.linux.utils [-] Exit code: 2; Stdin: ; Stdout: ; Stderr: RTNETLINK answers: Invalid argument

  # sudo neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb ip -6 route list dev ns-9c5e28a3-3a
  ::/64 proto kernel metric 256 pref medium
  fe80::/64 proto kernel metric 256 pref medium

  # sudo neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec qdhcp-a06d6387-5232-4552-aaf7-734ed2268aeb ip -6 route replace default via ::1 dev ns-9c5e28a3-3a
  RTNETLINK answers: Invalid argument

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