In T7646#231844, @ryanzuwala wrote:

Based on a recent Slack conversation we had about this, it seems like the most reasonable solution is to have configuration options like this:

• ipv6 address autoconf - accept RAs and do whatever M and O flags tell it to do
• ipv6 address dhcpv6 - DHCPv6 without RAs, must configure default route separately if needed
• ipv6 address dhcpv6 nd-defgtw - DCHPv6 without RAs, determine default route from neighbor discovery (possibly using the functionality in @josha script above)
• ipv6 address xx:xx:xx.... - Static IP

There are more fundamental problems here with the implementation that are incomplete.