[pve-devel] [PATCH container] fix #5742: lxc: setup: centos template keep static ipv6 assignment

[Thomas Lamprecht]

Am 28/10/2024 um 16:58 schrieb Daniel Herzig:
> As reported here [0], statically assigned IPv6 addresses get lost
> after a short while for Rocky and Almalinux 9 containers.
> 
> As pointed out by Andres, the additional option `IPV6_AUTOCONF=no`
> for the corresponding network interface seems to prevent the
> configured IPv6 address to be dropped.
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=5745
> 
> Reported-by: Andres Moya <andres.moya.i at gmail.com>
> Signed-off-by: Daniel Herzig <d.herzig at proxmox.com>
> ---
>  src/PVE/LXC/Setup/CentOS.pm | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/PVE/LXC/Setup/CentOS.pm b/src/PVE/LXC/Setup/CentOS.pm
> index 2ad1f0c..fddcffa 100644
> --- a/src/PVE/LXC/Setup/CentOS.pm
> +++ b/src/PVE/LXC/Setup/CentOS.pm
> @@ -228,7 +228,7 @@ sub setup_network {
>  	    } elsif ($d->{ip6} eq 'dhcp') {
>  		$data .= "DHCPV6C=yes\n";
>  	    } else {
> -		$data .= "IPV6ADDR=$d->{ip6}\n";
> +		$data .= "IPV6ADDR=$d->{ip6}\nIPV6_AUTOCONF=no\n";
>  		if (defined($d->{gw6})) {
>  		    if (!PVE::Network::is_ip_in_cidr($d->{gw6}, $d->{ip6}, 6) &&
>  			!PVE::Network::is_ip_in_cidr($d->{gw6}, 'fe80::/10', 6)

FYI, you missed updating the tests (and I checked to late), so I fixed that up
in a follow-up commit [0], please do a full build+deploy cycle before sending
patches to catch such things.

[0]: https://git.proxmox.com/?p=pve-container.git;a=commitdiff;h=1df0a49b5b30c0a7c3d50f435fabbb37c0c92b8d