I'm attempting to stand up a dual stack deployment and I can't get IPv6 working. While I'm familiar with OPNsense and IPv4, this is my first real foray into the world of IPv6.
ISP Router --> OPNsense --> Client
I'm stuck with the ISP router and it has zero configuration options. OPNsense is an up to date install and reset to defaults. It receives an IPv6 address from the ISP router and can connect to IPv6 hosts. The client is unable to connect to anything IPv6. If I connect the client directly to the ISP router then IPv6 just works.
How do I get IPv6 working on LAN?