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Just read that slaac does not work on bridges - https://www.reddit.com/r/Proxmox/comments/oq2rgi/how_to_use_ipv6_slaac_and_dhcpv6_for_the_proxmox/ I would recommend you to use IPv6 tokens to set a suffix this way the prefix can change any time.

I also use dhcpv6, follow the guide here and see if it works for you. https://saudiqbal.github.io/Proxmox/proxmox-IPv6-interface-setup-DHCPv6-or-static.html

Did you enable the firewall?

This is what I found in my logs, I still dont know after so many years why Proxmox changes the value of default-duid in /var/lib/dhcp/dhclient6.vmbr0.leases on every boot. Dec 28 02:32:38 s02 info[892]: executing ip -o addr show vmbr0 Dec 28 02:32:38 s02 info[892]: vmbr0: dhclient: new address...

I wish there was a one time donation option like $25 just to remove the subscription warning and show support for Proxmox and keep the No-Subscription Repository.

I use acme.sh directly on Proxmox

You can install wildcard certificate using acme.sh in Proxmox, I use acme.sh for my non wildcard proxmox sub domain using DNS verification but you can request a wildcard certificate as well.

I made a UPS monitor using a Raspberry pi which shuts down my Proxmox server after 3 minutes of power loss and starts the server once the power is back. Have a look at it here : https://saudiqbal.github.io/Linux/APCUPSD-UPS-Server-Proxmox-Notification.html

Looks like this has been fixed in 8.3, I am getting a proper REJECT now for outgoing connections (LAN access is blocked).

I used to use custom gotify php file to catch Proxmox notification into my central log and notification system but now webhook is available I got it to work directly with my own notification log system. If you have examples of webhook API working for different services post them here. Mine is...

Still no tag based backup and no fix for DHCPv6 generating new UUID on every reboot?

I do use DHCPv6 for Proxmox host to keep track in my router. This is my config - https://saudiqbal.github.io/Proxmox/proxmox-IPv6-interface-setup-DHCPv6-or-static.html

It would be nice to see a valid lets encrypt cert for download.proxmox.com, I know it is ok for an invalid cert but for a big company like proxmox it does not look good to see an invalid cert warning. Its free to get a valid cert from Letsencrypt.

I run fstrim daily for all my VMs and Proxmox using these two simple commands sed -i -e "s?OnCalendar=weekly?OnCalendar=daily?g" /usr/lib/systemd/system/fstrim.timer systemctl daemon-reload

Well all I wanted is to set up a VM, create a backup, download it and send it to my family members or friends and all they have to do is upload the zst file via the GUI. But this is not a big problem, just a suggestion to make life easier.

In the backup section of GUI Proxmox need buttons for quick download and upload of backup files. Suppose I want to download a VM and send it to someone I should have a quick download button to download zst file and a upload button to upload it easily on a different server instead of first...

I will also test this when this is available. I also added a rule to every VM - IN ACCEPT, which allows everything inbound.

Are IPv6 router advertisement allowed inbound

Looks like I might have asked the wrong question and the above solutions can be ignored. Don't even worry about them. I will try to ask the question again in simple terms. I created two firewall rules in a group and applied to my all my VMs Group name: Block LAN Rule1: out - 192.168.1.1 /...

GPT answer?