I have a BT EFM connection, which has an IPv6 allocation. I want to try and set this up on my own equipment which I have installed already and servicing our static IPv4 addresses with no problem.
On the order page I have from a couple of years ago, there are references to two IPv6 subnets - one is a /64 allocation which is labelled "Directly Connected Network" and gives me the IPv6 address of the BTnet router, the other is a /56 allocation (which encompasses the /64 above) which is labelled "Non-Directly Connected Network" and gives me an IPv6 next-hop address.
To me, this reads like I should assign the external interface of my firewall (which is connected to the Ethernet interface on our BT-provided Cisco router) an IPv6 address from the /64 Directly Connected network, and the rest of the /56 (i.e. the other 255 /64 subnets) is available for me to use on the firewall's internal interface(s). What's the purpose of the "next hop" IP address - is this my default gateway for outgoing traffic, or is this the IP address I should give to the external interface my firewall in order for our allocated /56 to be accessible for incoming IPv6 traffic from the BTnet router?
Thanks!