Hi, Great to see you are deploying IPv6!
Op 05/12/2023 om 16:05 schreef Tobias Rehn:
Hey together, I am in the process of setting up IPv6 in a shared guest network. I have successfully added the network with both IPv4 and IPv6 address space. For IPv4 the whole thing is working perfectly but I am failing with IPv6. I read the documentation and for me it is somehow unclear how the IPv6 addresses are installed on an instance. Speaking about the following document: http://docs.cloudstack.apache.org/en/4.18.1.0/plugins/ipv6.html In the documentation it says about Shared Networks... "The user VM generates an IPv6 link local address by itself, and gets an IPv6 global or site local address through DHCPv6."
You should enable IPv6 Router Advertisements so your router, not the VR, advertises itself on the network as a gateway. In this message it should also announce the prefix (usually /64) to be used in that network.
Based on the IPv6 Prefix and it's MAC address the Instance will obtain a unique address.
Make sure that IPv6 privacy extentensions are disabled inside the VM template.
But then further down... "The gateway of the guest network generates Router Advisement and Response messages to Router Solicitation." Does the VR handle the DHCP6 requests? Or should this be handled by our gateways?
DHCP is not used with IPv6, it's all using Router Advertisements and SLAAC, StateLess Address Auto Configuration.
What routers are you using for the shared network? Wido
Hopyfully, someone can point me to the right direction. Thanks. Best Tobias
