[GitHub] [cloudstack] GabrielBrascher commented on issue #4563: In Fresh Install of CS 4.15.RC3 IPV6 for Public IP is not accepted.

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GabrielBrascher commented on issue #4563:
URL: https://github.com/apache/cloudstack/issues/4563#issuecomment-794024295


   @rhtyd @utchoang @nxsbi this is not a bug in the UI indeed; neither on the CloudStack core.
   
   So far we have IPv6 support on KVM only when using Advanced networks with Security Groups enabled. The Physical Network of a Zone holds only IPv4 ranges for _management_ / _guest_ / _storage_ networks. However, the Zone must be deployed with `IPv6 CIDR`, `IPv6 DNS`, and `IPv6 Gateway`, in order to support IPv6 shared networks.
   
   Once the Zone has been deployed with the requirements for IPv6, then one can create a shared network by setting the network `IPv6 Gateway`, `IPv6 CIDR`, `IPv6 Start IP`, `IPv6 End IP`  of the network.
   
   Note that a shared network can be IPv4 only, but it cannot be IPv6 only; therefore, it is also necessary to configure the IPv4 address range for the shared network with IPv6 addresses. The IPv4 range can be of a public or internal IPv4 network.
   
   It might be a nice `TODO` task to add some efforts in implementing networks with only IPv6 addresses, but that's for another day.
   
   Hope that this answer helps. Please let me know if there are any questions.


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