Hi, I've been using the guide here and I have a few questions. First of all, in the section describing ufw setup there is this line: -A ufw6-before-forward -i eth0 -s YOUR_ROUTED_IPv6_NETWORK/64 -o sixxs -m state --state NEW -j ACCEPT What is "YOUR_ROUTED_IPv6_NETWORK" in this context? I have tried putting in my subnet prefix and both endpoints with a restart of radvd, Wide DHCPv6 and ufw in between each try. They all seem to work. The hosts get valid ipv6 addresses from the server and it does seem to work. I do get some strange behaviour from ipv6 test sites complaining about blocked addresses and MTU being insufficient, but I have no idea if it's related to this or just my dodgy ISP that makes it unstable. Also, in the radvd.conf section there is the line with "RDNSS IPv6_ADDRESS_OF_SIXXSNSCACHE_1 IPv6_ADDRESS_OF_SIXXSNSCACHE_2". Since that service has been discontinued, I'm not really sure what to put in there. ATM I have that row commented out.