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https://issues.apache.org/jira/browse/CLOUDSTACK-1232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13587962#comment-13587962
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Sheng Yang commented on CLOUDSTACK-1232:
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dnsmasq doesn't support it. We would only support cidr=64.
> Ipv6 - Guest Vms are not able to get Ipaddress when executing dhclient
> command when using "/96" network.
> --------------------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-1232
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1232
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.1.0
> Environment: Latest build from network refactor branch.
> Reporter: Sangeetha Hariharan
> Assignee: Sheng Yang
> Fix For: 4.1.0
>
>
> Steps to reproduce the problem:
> Create a IPV6 network using “/96” CIDR.
> Deploy a Vm in this network.
> Router assigns an Ipaddress to this VM.
> root@r-51-VM:~# cat /etc/dhcphosts.txt
> id:00:03:00:01:06:ce:88:00:00:3c,[fc00:3:1380::9fe5:5d25],vm-1380-1,infinite
> But guest Vms are not able to get the ipaddress.
> I see the following in the router logs when , dhclient request is made from
> the guest.
> Feb 12 02:31:21 dnsmasq-dhcp[1805]: no address range available for DHCPv6
> request via eth0
> Feb 12 02:31:22 dnsmasq-dhcp[1805]: no address range available for DHCPv6
> request via eth0
> Feb 12 02:31:24 dnsmasq-dhcp[1805]: no address range available for DHCPv6
> request via eth0
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