[Script request] Improve default LXC template for IPv6 Support (IPv6AcceptRA)

[b3nw]

Application Name

LXC Debian

Website

N/A

Description

For additional context see:

• https://forum.proxmox.com/threads/ipv6acceptra-false-default-in-lxc-for-ipv6-dhcp.144649/
• https://bugzilla.proxmox.com/show_bug.cgi?id=5538

For Advanced Template, when picking to enable IPv6, please also ask if IPv6AcceptRA should be set to True.

Alterantively, when offering enablement/disable of IPv6, offer a choice between DHCPv6 or SLACC.

Due Diligence

• I have searched existing scripts and found no duplicates.
• I have searched existing discussions and found no duplicate requests.
• This is not a game-related request.