alt Hacker News> Doesn’t remove the need for nat - my wired IsP might be able to bgp with me, but my backup 5g won’t, and when I want to choose which to send my traffic through with PBR that means natting.
Yes, it does. You just have each of your routers (wired and 5G) advertise the /64 prefix delegated by each of your ISPs. Your hosts will self-assign a v6 address from each prefix.
To control which link the traffic uses, you just assign router priority in the router advertisement (these are all standard settings in radvd.conf).
> Things like SLACC make it harder to work out what devices are on the network
Again, not true. If you really don’t trust your devices, then DHCP isn’t going to save you. Malicious hosts absolutely can self assign an unused v4 address, and you’ll be none the wiser if you just look at your DHCP leases.
> Yes, it does. You just have each of your routers (wired and 5G) advertise the /64 prefix delegated by each of your ISPs. Your hosts will self-assign a v6 address from each prefix.
> To control which link the traffic uses, you just assign router priority in the router advertisement (these are all standard settings in radvd.conf).
Have you done this? Did it actually work for you?
When I tried it, clients would regularly send to router B with an address from router A, and often ignore the priorities. As I understand the RFCs/client behavior, the router priority field is only relevant if multiple prefixes are in a single advertisement, otherwise most recent advertisement wins.
Once you need to aggregate the advertisements, you may as well NAT66, cause it will be easier.