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proxmox ipv6 setup for vm not working
ashish168527
Member
in General
Hi, I have an proxmox server running and I have 1 ipv4 as my main ip and 1 /64 ipv6 block with ipv6 gateway address,
I have added my first usable ipv6 & ipv6 gateway to the default vmbr0,
Created ubuntu vm did static ipv6 on the vm ,
Vm can ping proxmox ipv6,
Proxmox can ping vm ipv6
Firewall is off
But still not able to access internet on the vm, can anyone let me know what I'm doing wrong,
I'm not sure it's the right place to ask my this question or not, asking because as here we have alot of providers so maybe they can guide me 
Thanks
Comments
@beanman109 will help you
Thanks for mentioning, i will wait for his reply
Do you have routed /64 ?
If it's on-link, please ask your provider to configure the subnet as routed instead.
Mac address verification?
Did you enable IPv6 forwarding?
make sure your internet supports IPv6, if not you will not be able to access
Did created one ticket to ask about it they are saying everything is good on our side and it's not managed server so I have to take care of what I do on my server
Yes did enabled ipv6 forwarding
How can i do it ? Proxmox auto generated mac addresses for vm i created
My internet supports ipv6, to test it I have installed apache on proxmox and its web page is accessible on the first usable ipv6 that i configured in proxmox default vmbr0
Post your /etc/network/interfaces
What does this mean? Did you take a single /128 v6 from the /64 and assign it to vmbr0 on the host node?
If so, assign the entire /64 to vmbr0 then take a /128 prefix from that and assign it within the VM.
If there is no network profile for the server, all of our recommendations are divinatory, please publish your network profile after retaining critical privacy information.
Didn't knew that we can assign whole /64 to vmbr0, that's why I assigned first usable ipv6 /128 to vmbr0
Thanks everyone for your suggestions @wadhah @yoursunny @spiritlhl @eezcloud @Kolestor @Andreix @HostDoc , i finally managed to get it up and running, actually the issue was the proxmox didn't had ipv6 dns server in place that's why all the vm's with ipv6 only address was able to ping host and host to vm, but all internet requests were failing, just added ipv6 dns in proxmox and everything started working
Sounds like you've set up most of it right, but maybe double-check your routing and DNS settings on the VM.
Yes DNS was the culprits added ipv6 dns address in proxmox DNS section and everything started working