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

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

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https://bugs.launchpad.net/bugs/1102504

Title:
  Subnet creation (Quantum) defaults to mask /32

Status in OpenStack Dashboard (Horizon):
  Fix Released
Status in OpenStack Dashboard (Horizon) folsom series:
  Fix Committed

Bug description:
  When creating a subnet during the network creation process, if the
  user doesn't include a mask in the Network address field, the subnet
  mask defaults to /32, making it impossible to allocate an IP when
  launching an instance later on (Quantum logs:
  IpAddressGenerationFailure No more IP addresses available on network).
  It's easy to miss when creating a new network.

  Steps to reproduce:
  1. Go to the network page and create a new network
  2. On the subnet page, specify an ip without a netmask
  3. Try to launch an instance with that network

  Actual results:
  The subnet was created with a netmask of /32 and the instance errors.

  Expected results:
  Probably creating a subnet without a netmask should fail. Quantum does allow you to create a subnet with cidr /32, but because providing the netmask is mandatory this problem is less likely to happen.

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