Static IPv6 plus Privacy Extension SLAAC

IonutIT

New Member
Jan 2, 2026
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Hi everyone,

I've been trying to get a particular setup for my Proxmox environment.

I have vmbr0.50 setup with static IPv4 and static IPv6 for managing my Proxmox instance. I want to also add a SLAAC configured address with privacy extension that Proxmox will use for outgoing connexions (downloading updates for example), but I can't seem to get this to work. My current setup is:

Code:
auto vmbr0.50
iface vmbr0.50 inet6 static
    address 2a02<redacted>200/64
    gateway fe80::1
iface vmbr0.50 inet6 auto
    accept_ra 2
    privext 2

On top of that I also have a sysctl file in /etc/sysctl.d/pve-ipv6.conf where I have defined:

Code:
net.ipv6.conf.vmbr0/50.use_tempaddr = 2
net.ipv6.conf.vmbr0/50.accept_ra = 2

And yet I can't seem to get the SLAAC address of any kind. Only the static IPv6.

Any input on this is greatly appreciated