I the mean time I would like to remove IP v6 support from my firmware. The reason is that this code is not supported and I've no idea if it works at all. The other reason is that even with IPv6 enabled this firmware is not a real IPv6 solution. It misses some vital features like iptables for IPv6. So, mostly this firmware is noop for IPv6.
If you've any objections, then let me know.