Hi Tobias, I'm not sure if it fits your use case (and Wido already gave you all the necessary advice on Shared networks and IPv6), but I'd like to highlight that there's support for IPv6 in Isolated Networks and VPCs as well.
Cheers Alex -----Original Message----- From: Tobias Rehn <[email protected]> Sent: Wednesday, December 6, 2023 9:45 AM To: Wido den Hollander <[email protected]> Cc: [email protected] Subject: Re: IPv6 in Shared guest network Hey Wido, thank you. That solves a lot of trouble in my head. :) The documentation is not that clear. IPv6 ist a must have for us We are using Juniper MX gear as gateways. I just have to check if we can do SLAAC with our current JUNOS version and setup as we are using EVPN+MPLS with all-active multihoming on the gateway side. Am Mi., 6. Dez. 2023 um 09:06 Uhr schrieb Wido den Hollander < [email protected]>: > 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 > > >
