[SOLVED] CentOS 7 container IPv6 DHCPv6 and default gateway

[trunet]

Hello,

On my network, I have a dhcpv6 server and router advertisement configured as Managed (dhcpv6 gives the address, radvd gives routes/prefixes/gateways).

Proxmox settings are below:



Proxmox generated network config:

# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=dhcp
IPV6INIT=yes
IPV6_AUTOCONF=no
DHCPV6C=yes

With the current generated configuration, I get the IPv6 address, but there's no default gateway configured. To make it work, I should have IPV6_AUTOCONF=yes. Manually changing and restarting network stack works, but everytime the container is rebooted, the config is regenerated.

How can I make this persistent?

Best regards,
Wagner Sartori Junior

 

[Stoiko Ivanov]

HI,

if this is persistent - would you please open a bugreport at https://bugzilla.proxmox.com ? Thanks!

As a workaround you can make PVE ignore your ifcfg-eth0 file while starting the container (that way your changes will persist across a reboot)

please check our reference documentation https://pve.proxmox.com/pve-docs/chapter-pct.html#_guest_operating_system_configuration (the .pve-ignore. part)

 

[trunet]

I filled the bug as I believe this should be fixed:
https://bugzilla.proxmox.com/show_bug.cgi?id=2027

For now, I used your workaround suggestion and it's working.

Thanks Stoiko.

 

[Stoiko Ivanov]

Thanks! we'll update the bugreport when we get around to tackle the issue!