Ubiquiti Edgerouter IPv6 (Zen Internet UK) plus Tayga NAT64 configuration
Nearly 23 years after starting a new job managing IPv6 development at Cisco Systems, I've finally ended up with an ISP here in the UK that actually supports IPv6. So I thought I'd better turn it on. Zen Fibre still uses PPPoE, and they give you a static /64 via SLAAC and a static /48 that's allocated via DHCPv6-PD. Although the prefixes are static, it appears that you have to use PD to make a prefix request, in order for routing for the whole /48 block to be enabled in your direction. The configuration I ended up with is as follows. I disable use of the ISP's DNS server as I've got my own local server with ad-blocking. The firewall setup isn't shown, but blocks all incoming traffic, allows ICMPv6, established sessions and DHCPv6. A caveat about using the Edgerouter's PD implementation is that the "service slaac" clause auto-generates a basic radvd configuration for that interface. However, this then gets overwritten if you explicitly configure