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[Andrey Pavlov <andrey.mp@xxxxxxxxx>]

Public bug reported:

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/)

** Affects: nova
     Importance: Undecided
         Status: New

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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 OpenStack Compute (nova):
  New

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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