Enable with ipv6

I want to use ipv6 instead of ipv4 to run proxmox so my ipv4 is free for vm
I did it in the settings but it didn't work.
eno1 is active
And this is my setup
auto lo
iface lo inet loopback

iface eno1 inet manual

iface eno2 inet manual

iface eno3 inet manual

iface eno4 inet manual

auto vmbr0
iface vmbr0 inet static
address 158.181.52.197/24
gateway 158.181.52.1
bridge-ports eno1
bridge-stp off
bridge-fd 0

iface vmbr0 inet6 static
address 2a00:6140:119:33::1/48
gateway...

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