On 07/03/2017 01:44 AM, D. Hugh Redelmeier via talk wrote:
I just assume that dhclient knows how to do this. But I'll have to look into it.
Actually, this is something that caused me problems. I used to use openSUSE for my firewall, but it couldn't handle DHCPv6-PD. As a result, I switched to pfSense for my firewall. However, a Linux computer should be able to get an IPv6 address for itself, when connected directly to the modem. The "PD" refers to prefix delegation and it's how a router is assigned the LAN prefix. BTW, previous to getting IPv6 from Rogers, I used a 6in4 tunnel to get IPv6 from a tunnel broker. My openSUSE router/firewall worked fine with this. I also had a /56 prefix then. Some people recommend handing out /48 (2^80 addresses) prefixes to everyone. There are enough of those to give every person on earth well over 4000 of them and this is with only 1/8th of the entire IPv6 address space allocated for global unicast addresses.