LXC and IPv6AcceptRA

[hidalgo]

I got 2 containers with Ubuntu 24.04.3 LTS. Both running as clients with DHCPv6. One of them has the correct settings in

/etc/systemd/network/eth0.network

[Match]
Name = eth0

[Network]
Description = Interface eth0 autoconfigured by PVE
DHCP = yes
IPv6AcceptRA = true

while the other one has

[Match]
Name = eth0

[Network]
Description = Interface eth0 autoconfigured by PVE
DHCP = yes
IPv6AcceptRA = false

I checked every parameter I could find and everything seems to be equal. Where does this come from?

I helped me out with
touch /etc/systemd/network/.pve-ignore.eth0.network
so I don’t have to mess around. But I’d like to understand, from where the container gets its values.

Any ideas?

 

[reinob]

do you really want/need DHCPv6?
Normally RA is the way to go for IPv6. I think only old versions of Windows require DHCPv6.