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[Sean Dague <sean@xxxxxxxxx>]

This was when we changed the default to use metadata server all the
time. It sounds like previously the ec2api didn't work if it was using
metadata server instead of config drive.

Is there some default additional metadata route that needs to be put
into neutron during such a config?

** Also affects: neutron
   Importance: Undecided
       Status: New

** Changed in: nova
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1618013

Title:
  metadata route is absent and metadata server unavailable for instance
  with network w/o gateway (regression)

Status in neutron:
  New
Status in OpenStack Compute (nova):
  Incomplete

Bug description:
  ubuntu 14.04
  latest devstack (28.08.2016)
  enabled services: nova, glance, cinder, keystone, horizon, neutron, neutron-vpnaas, ec2-api

  steps to reproduce:
  0) source demo credentials
  1) create network
  2) create subnet without gateway
  3) boot instance from cirros image
  4) run vnc console
  5) run 'route -n':
  Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  10.10.0.0       10.10.2.1       255.255.0.0     UG    0      0        0 eth0
  10.10.2.0       0.0.0.0         255.255.255.0   U     0      0        0 eth0

  6) run 'curl http://169.254.169.254/latest/'
  curl: (7) Failed to connect to 169.254.169.254: Network is unreachable

  
  if user runs instance with predefined network that all works well:
  $ route -n
  Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  0.0.0.0         10.10.1.1       0.0.0.0         UG    0      0        0 eth0
  10.10.0.0       10.10.1.1       255.255.0.0     UG    0      0        0 eth0
  10.10.1.0       0.0.0.0         255.255.255.0   U     0      0        0 eth0
  169.254.169.254 10.10.1.1       255.255.255.255 UGH   0      0        0 eth0

  
  according to gating jobs it was broken between "Aug 25 2:05 PM" (last check pipeline - https://review.openstack.org/#/c/360230/)
  and "Aug 26 1:05 AM" (patch 4 first check pipeline - https://review.openstack.org/#/c/357766/)

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