Op 06/12/2023 om 09:45 schreef Tobias Rehn:
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.
Yes, that is possible. You need to set the 'protocol
router-advertisement' on your IRB device for your EVPN environment.
You probably want to use Anycast IPv6 gateways in this case and
configure the RA to be send from the Juniper not to be the Link-Local
address but the Anycast address of the router(s).
Wido
Am Mi., 6. Dez. 2023 um 09:06 Uhr schrieb Wido den Hollander
<[email protected] <mailto:[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
<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
>
