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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9016) Fail to create VM instance within VPC
Date Mon, 02 Nov 2015 19:34:27 GMT


ASF subversion and git services commented on CLOUDSTACK-9016:

Commit 20bbd342cec5d6bbc4fa954fb8b8c9fe5f3a55dc in cloudstack's branch refs/heads/master from
[;h=20bbd34 ]

Merge pull request #1020 from bvbharatk/CLOUDSTACK-9016

CLOUDSTACK-9016 Fail to create VM instance within VPCbug link

CS doe not allocate the ip of the form x.x.x.1 to a guest VM. We seem to incorrectly assume
that the first ip in the subnet belongs to the gateway.

* pr/1020:
  CLOUDSTACK-9016: Deploy vm with gateway ip address in VPC
  CLOUDSTACK-9016 Fail to create VM instance within VPC

Signed-off-by: Remi Bergsma <>

> Fail to create VM instance within VPC 
> --------------------------------------
>                 Key: CLOUDSTACK-9016
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>    Affects Versions: 4.6.0
>            Reporter: Sanjeev N
>            Priority: Critical
> ==================
> 1. Create a VPC with
> i) Super CIDR for Guest Networks:
> 2. Create network "HTTP Server"
> i) Network Offering: DefaultIsolatedNetworkOfferingForVPCNetworks"
> ii) Gateway:
> iiI) Netmask:
> 3. Deploy 4 VM instance succeed, unable to create 5th vm.
> If we set Gateway to, it works fine.
> Root Cause:
> ===========
> CS is not allocating the first IP address in the CIDR to guest vm. It treats that IP
address as gateway IP address.

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